Epitalon (Epithalon): The Definitive Guide

What is Epitalon?

Epitalon, also spelled Epithalon, is a very short lab-made peptide: a chain of just four amino acids, alanine, glutamic acid, aspartic acid and glycine (Ala-Glu-Asp-Gly, or AEDG). People take it hoping to sleep better and to slow aging. No regulator we checked has approved it as a medicine, and most of it is sold as injectable “research” powder. [1], [2]

It comes from a Russian research program led by Vladimir Khavinson at the St Petersburg Institute of Bioregulation and Gerontology, which calls these short peptides bioregulators. Epitalon was designed from the amino-acid makeup of epithalamin, an extract of the pineal glands of young cattle. The pineal gland is a small gland deep in the brain that releases the sleep hormone melatonin at night. [3], [4]

Epitalon and epithalamin are not the same thing. Epithalamin is a mixture of many peptides; Epitalon is one small molecule. FDA treats them as different substances, and most of the striking human results people quote, such as older adults living longer, come from epithalamin. The developers later reported finding the AEDG chain inside their extract, which does not make the two interchangeable. [1], [5], [6]

Epitalon comes as a free base (390.35 g/mol) or an acetate salt (450.40 g/mol), usually in vials of 10, 20 or 50 mg. Nasal sprays, under-the-tongue sprays and capsules are also sold. [1], [7], [8], [9], [10]

Epitalon is a lab-made chain of four amino acids, Ala-Glu-Asp-Gly, weighing 390.35 g/mol. Published human studies used 10 mcg a day into a muscle, 100 mcg to 0.5 mg a day under the tongue, or 5 mcg per eye beside the eye, for 10–20 days, and measured melatonin markers and vision. It is sold as 10–50 mg vials, sprays and capsules. Epithalamin is an extract of calf pineal glands containing many peptides; in the 2007 comparison it was given as 10 mg into a muscle every third day, five times, and it is the product used in long-term mortality studies of older people. FDA treats the two as different substances. The popular 5–10 mg injection matches the extract's amount, not the doses tested for Epitalon.

Doserly

Two products, one family name

Published human studies and FDA's 2026 review

Epitalon (synthetic)

What it is: A lab-made chain of four amino acids: Ala-Glu-Asp-Gly (AEDG), 390.35 g/molDoses tested in people: 10 mcg a day into a muscle; 100 mcg–0.5 mg a day under the tongue; 5 mcg per eye beside the eye; courses of 10–20 daysWhat those studies measured: Melatonin markers and visionHow it is sold: 10–50 mg vials of powder; also nasal sprays, under-the-tongue sprays and capsules

Epithalamin (extract)

What it is: An extract of calf pineal glands: a mixture of many peptidesDose in the 2007 comparison study: 10 mg into a muscle every third day, five times (50 mg course)Human studies: Long-term mortality studies in older people, for example 266 people over 6–8 yearsRegulator view: FDA treats it as a different substance from Epitalon

The popular 5–10 mg injection matches the extract's amount, not the doses tested for Epitalon.

Typical Epitalon Protocols

The most common protocol in the reviewed sources is 5–10 mg once a day by subcutaneous injection for 10–20 days, repeated after 4–6 months, or about two or three courses a year at most. Of 29 injection pages we compared, at least 25 name 5 mg, 10 mg or both as the daily amount. [12], [13], [14], [15], [16], [7]

Titration Changing the amount in steps

Most sources use one fixed amount for the whole course, and the microgram and milligram schedules are separate families, not steps. One clinic page describes starting a first course at 5 mg a day for 10 days and raising the amount in later courses based on tolerance. Nasal-spray sellers give two-, three- and four-spray levels. [11], [17], [8]

Breaks and cycles

A 10–20-day course, then 4–6 months off; pages describe two or three courses a year. Sources say not to use it continuously. The microgram schedule instead repeats 10 days on and 20 days off. [12], [13], [8], [11]

Timing

Most pages advise the evening or bedtime, to line up with melatonin's night rhythm. The injection study in people gave it at 10 a.m., and some users sleep worse after evening doses. See timing. [12], [18]

Read the units: mcg means micrograms; 1 mg equals 1,000 mcg. So the mid row's 5 mg is 5,000 mcg, and the high row's 10 mg is 1,000 times the 10 mcg a day injected into a muscle in the 2007 study in older adults. A “course total” is the daily total times the number of days: 5 mg for 20 days and 10 mg for 10 days both add up to 100 mg. [16], [18]

Each row is a complete schedule from one source, so its amount and duration belong together. Low, mid and high are alternatives, not steps to move through. These schedules come from protocol websites rather than clinical trials, and no study has given people milligram amounts by subcutaneous injection; the cited references give the full details.

Cautions for every schedule above:

• Untested amounts. No study has given people these milligram amounts, the longest published human course lasted 20 days, and no study describes how side effects were checked. Safety in people is not established. [19], [18], [20], [21]
• Cancer history. FDA raises a theoretical concern that, by switching on telomerase, long-term use could let cells escape their normal limit on dividing and become cancerous, and an independent 2025 study found Epitalon lengthened telomeres in breast-cancer cells. People with a history of cancer, or a higher risk of it, should be especially cautious. [1], [22]
• Sleep can get worse. Worse sleep, including early waking, is the most common complaint in public accounts. Some people report sleeping better after moving the dose to the morning; others say it did not help (see timing). [23], [24]
• Pregnancy, breastfeeding and under-18s. None of these groups has been studied in people; in the one rabbit study, labeled Epitalon reached fetal organs. [25]
• Prescribed treatment. Do not stop or replace prescribed sleep medicines, hormone therapy or cancer treatment to try Epitalon. FDA found no study of it in people with insomnia, and no study has looked for interactions with other medicines. [1]
• Product and unit errors. FDA judged both forms poorly characterized and could not rule out immune reactions to impurities and clumps, a risk its safety list flags for Epitalon. Milligrams and micrograms differ 1,000-fold, so check every amount with the reconstitution calculator. [1], [26]

Full risks, legal status and who should be cautious ↓

What doses were tested in people?

The website amounts and the study amounts are far apart. The 5–10 mg figures match the dose of epithalamin, the pineal extract: in the one study that tested both, epithalamin was given as 10 mg into a muscle every third day, five times, while Epitalon was given as 10 mcg a day. The usual 5–10 mg is 500 to 1,000 times that Epitalon dose. [18], [27]

The developer's patents add further series: 10 mcg into a muscle daily for 10 days in small groups without a comparison, and, in a retinal patent, 10-day courses of 100 mcg and 1 mg a day into a muscle in people with eye disease, compared with patients on usual treatment. That 1 mg course is the largest amount of synthetic Epitalon we found reported in people, still 5 to 10 times below the usual website amount. [3], [28]

Each step on this scale is ten times the one before. Human studies of Epitalon used 5 mcg per eye beside the eye, 10 mcg a day into a muscle, 100 mcg a day under the tongue and 0.5 mg a day as an under-the-tongue spray; a retinal patent describes 100 mcg and 1 mg a day into a muscle. Website protocols describe 100–500 mcg a day, 5 mg a day and 10 mg a day by subcutaneous injection. The 5–10 mg amounts sit next to epithalamin, the extract, given as 10 mg per injection every third day. No human study has tested subcutaneous milligram amounts.

Doserly

Micrograms in studies, milligrams online

Published human studies, patents and protocol websites

1 mcg → 100 mg · equal spacing means 10×

5 mcg per eye (10 mcg a day, both eyes)

Beside the eye (parabulbar) · Human study · Eye study, 2002

10 mcg a day

Into a muscle · Human study · Older adults, 2007; patent series

100 mcg a day

Under the tongue · Human study · Shift workers, 2018 study

100–500 mcg a day

Subcutaneous · Website protocol · Microgram schedule

100 mcg and 1 mg a day

Into a muscle · Patent series · Retinal patent, eye disease

0.5 mg a day (as stated)

Under-the-tongue spray · Human study · Night-shift women, 2021

5 mg a day

Subcutaneous · Website protocol · Most common website amount

10 mg a day

Subcutaneous · Website protocol · Website high

10 mg per injection, every third day

Into a muscle · Extract (epithalamin) · Epithalamin, 2007 comparison

Amounts are per day except the epithalamin marker, which is per injection.

No human study has tested subcutaneous milligram amounts.

In community education groups, educators mostly teach 5–10 mg a day by subcutaneous injection for 10–20 days, once or twice a year and never continuously, usually in the evening. One group standardizes on 2–5 mg a night, and another teaches starting at 1 mg and stepping up only if nothing is noticed. Members often use less than the lessons suggest: 1–3 mg a night is at least as common as 5 mg, and a growing group uses 100–500 mcg after learning that the milligram doses came from the extract.

Where protocols differ: extract doses, micrograms, course length and timing ↓

What is Epitalon commonly used for?

People usually look into Epitalon for sleep, for “anti-aging”, and less often for an eye disease. Websites also promote it for skin, immunity, energy, mood and memory. FDA's 2026 review lists many of these website claims, from slowing aging to preventing cancer and dementia. [1]

The subsections below describe that interest and the evidence behind it. They do not establish that Epitalon treats or prevents any condition.

Sleep and the body clock

This is the use people talk about most, and the only one where many say they notice something. Small Russian studies found that Epitalon raised melatonin, or its breakdown product in urine, in people whose levels were low for their age: older adults given injections, and middle-aged shift workers given it under the tongue. None of these studies measured sleep itself. [18], [33], [21]

FDA's 2026 review found no study in people with insomnia and no animal study of sleep. Public accounts are split: many describe falling asleep faster, and a sizable minority sleep worse. What people report. [1]

Telomeres and aging

The anti-aging claims rest on telomeres, protective caps on the ends of chromosomes that shorten each time a cell divides. In cells grown in a dish, Epitalon switched on telomerase, the enzyme that rebuilds them, and lengthened telomeres. [34], [22]

No study has measured telomeres, biological age or lifespan in people taking Epitalon. The human studies in which older people lived longer used epithalamin, the extract, and in animals Epitalon's effects on lifespan were small and inconsistent. How it might work. [1], [5], [35]

Eye disease

The largest human study is in retinitis pigmentosa, an inherited disease in which the light-sensing cells of the retina slowly die. In 2002 the developers reported a positive effect on a combined judgment of vision and retinal tests in most of about 116 treated people, compared with 46 patients on usual care, without random assignment. In 2010 FDA gave Epitalon orphan-drug designation for this disease; the designation was withdrawn in 2016 and no product was approved. [19], [36], [1]

That study used 5 mcg injected beside each eye. Some websites apply their usual 5–10 mg subcutaneous injection to “eye health”, which is a different route and a far larger amount. [13]

Other uses you may come across

Claims that Epitalon improves memory, focus, skin, hair, immunity or energy, or that it prevents cancer, have not been tested in people. A research foundation review found no human studies on memory or brain protection, and the cancer claims come from animal experiments, while FDA raises the opposite concern. [37], [1]

See the human research or explore how it might work.

Where do Epitalon protocols differ?

The daily amount is easy to state. The disagreements start with where that amount came from, whether it should be milligrams at all, and when to take it.

Is the dose from Epitalon or from epithalamin?

Check this first. In the 2007 study that tested both, epithalamin was given as 10 mg into a muscle every third day, five times (50 mg in all), while Epitalon was given as 10 mcg a day for 10 days (0.1 mg in all). One popular page presents that extract schedule as the “Original Khavinson” Epitalon protocol. A 1990 Soviet instruction for epithalamin, available as an unofficial online copy, gives 5–10 mg into a muscle daily for 5–10 days, repeated after 3–6 months, which closely matches today's website pattern, and a 2026 hypothesis paper argues that the whole 5–10 mg habit was carried over from the extract. [18], [30], [38], [27]

Several pages also credit Epitalon with the extract's mortality results, such as a 1.6-fold drop in deaths among older adults. Those studies used epithalamin, sometimes with a thymus extract, not Epitalon. [39], [40], [5]

Milligrams or micrograms?

A growing number of sources describe microgram schedules: 100–500 mcg a day for 10 days, then 20 days off, or 300 mcg a day on one clinic's dosing chart. The developer's patent claims amounts of 0.01–100 mcg per kilogram of body weight, and the 2026 hypothesis paper suggests testing 100–300 mcg a day, a figure it scaled up from a mouse dose rather than tested. [11], [41], [3], [27]

At the other end, one Russian-language page gives 10–20 mg a day into a muscle. One page claims doses “up to 50 mg per day” were tested with no added benefit; we found no such study. [29], [30]

Ten days or twenty, and how often?

Two course lengths dominate: 10 days, often at 10 mg, and 20 days, often at 5 mg. Both add up to 100 mg, and one guide treats them as interchangeable. Repeats every 4–6 months are the most common advice, some pages say two or three times a year, and 10-days-on, 20-days-off schedules repeat monthly. [16], [12], [13], [11], [42]

Protocol pages insist the courses should be short. In community education groups, many members run it longer: 45–60-day courses, 12 weeks straight, or small nightly doses for years. No study has compared course lengths, and none has tested continuous use.

Evening or morning?

Most pages say evening or bedtime, reasoning that Epitalon works through melatonin, which rises at night. The studies in people did not do this: the injections were given at 10 a.m., and the 2021 spray study gave doses in the morning and early afternoon. [12], [8], [18], [20]

Timing matters to some users. One person injecting 3 mg at 6 p.m. reported poor sleep and a higher resting heart rate, then better sleep after switching to 1 mg in the morning; others found that moving the dose earlier did not help. [24], [43], [23] In community education groups, moving the dose to the afternoon or morning is the change members most often describe after Epitalon-related insomnia. No study has compared timing.

Nasal sprays, under-the-tongue sprays and capsules

These products use different amounts and cannot be compared with injections:

• Intranasal sprays: one Russian seller's spray delivers 200 mcg per spray, 1–3 sprays a day, up to 5; another seller's spray delivers 625 mcg per spray, two to four sprays once a day for 10–20 days. [44], [8]
• Under-the-tongue spray: the spray used in the 2021 study is sold as a food supplement, labeled 5 pumps a day. Pages linking it to that study give 0.5 mg a day for 20 days. [9], [45], [46]
• Oral capsules: one seller lists 3 mg capsules, one each weekday morning, every second week. [10]

Only the under-the-tongue route has been studied in people, and those studies measured melatonin markers, not benefits. [20], [21]

What about stacks and blends?

Epitalon is rarely taken alone. One protocol site lists an Epitalon and Thymosin Alpha-1 blend (10 mg of each per vial) dosed at 1 mg of each daily for 20 days, then 500 mcg of each twice a week; the blend's total weight is not its Epitalon amount. Another lists NAD+, MOTS-c and SS-31 as common partners. [39], [30]

In community education groups, Epitalon is often paired with Pinealon in the morning or DSIP at night, sometimes mixed in the same syringe, with no data on whether they mix safely. None of these combinations has been studied.

See the Doserly guides to NAD+, MOTS-c and SS-31.

How do milligrams convert to syringe units?

Injection pages often give amounts as units on a U-100 insulin syringe, which holds 100 units per millilitre. Units measure volume, so how much Epitalon each unit holds depends on how much water went into the vial.

For example, a 10 mg vial mixed with 2 mL of water holds 5 mg per mL, so a 5 mg dose is 1 mL, or 100 units: a full 1 mL syringe. FDA notes that Epitalon free base dissolves poorly in water and that even 3 mg per mL may not be achievable, so a 5 mg per mL mix of the free base may not fully dissolve. A cloudy vial alone cannot show what is in it or why. [7], [12], [1]

Page arithmetic also goes wrong: one page says a 20 mg vial covers two 10-day courses at 10 mg a day, which would need 200 mg. Doserly's reconstitution calculator works out units for any vial and shows each step. [32]

What happens when you stop Epitalon?

This has barely been studied. No study checked for withdrawal effects or a rebound in sleep problems, and most followed people only until the end of the course.

• Melatonin markers. In the 2024 under-the-tongue study, the rise in the urine melatonin marker was measured five days after the 10-day course ended. No later measurement was reported. [21]
• Eye disease. The developer's retinal patent reports that, in 56 people aged 48–79 with age-related macular degeneration, improvement held for six months in 79.4% of treated patients and for a year or more in 20.6%; 39.6% of a comparison group on usual treatment improved. These are the inventors' own, non-randomized data. [28]
• Animal studies. The lifespan experiments gave Epitalon on repeating schedules for life, such as five days every month in mice, so they never tested stopping. [35]
• Personal accounts. Public reports go both ways. Some people say better sleep lasted weeks or months after a course; others say it faded within about three weeks or during breaks; one person slept worse for a time after stopping. [58], [59], [60], [61], [62] Read the accounts.

Lessons in community education groups often claim the effects last for months between courses. That idea is used to justify short courses, but it has not been measured.

Do injections, sprays and capsules of Epitalon behave the same way?

Nobody has measured this. Bioavailability, how much of a dose reaches the blood, is unknown for every route, and no study has measured Epitalon's levels in the blood of people or animals (pharmacokinetics). FDA found only one study of where it goes in the body: fluorescent-labeled Epitalon injected into a vein of pregnant rabbits showed up in the mothers' and fetuses' organs within an hour, but the study could not prove the signal was the peptide itself. [1], [25]

The human studies used three routes: into a muscle, under the tongue and beside the eye. Websites mostly describe subcutaneous injection, which has never been studied in people. In rats, Epitalon dripped into the nose changed nerve-cell firing in the brain's outer layer within minutes, which says nothing about a person's dose. A 2023 computer model from the developer's group predicted that it could fit gut transporters for small peptides; that is a prediction, not a measured absorption. [63], [64]

How long does Epitalon last in the body?

Nobody knows. No study has measured its half-life in any species. Websites print figures of 5 minutes, about 30 minutes and 2–4 hours, and none cites a measurement. [1], [27], [52], [56], [40]

Does the form matter: free base, acetate or “N-acetyl”?

FDA treats the free base and the acetate salt as different active ingredients and judged neither well characterized. By weight, 10 mg of the acetate contains less peptide than 10 mg of the free base, because the acetate part adds weight. Versions sold as “N-acetyl” or “amidated” Epitalon are chemically different molecules, and our searches found no published studies of them. [1]

How should Epitalon be stored, and how long does it last?

No one has published a stability study of Epitalon, and there is no approved product label. What exists are supplier statements, which FDA passed on without testing them:

• Powder, before mixing. One supplier says freeze-dried (lyophilized) Epitalon free base is stable for 3 weeks at room temperature but should be stored dry below −18 °C (about 0 °F), because moisture shortens its life. An acetate supplier says to keep it sealed at 2–8 °C (36–46 °F). [1]
• After mixing. The free-base supplier says the mixed (reconstituted) solution should be stable for 2–7 days at 4 °C (39 °F). [1]
• Protocol websites give longer and conflicting times: use within 14 days, typically within 4 weeks, or 6 weeks in the fridge, and more than 3 years for frozen powder. One page now simply says to follow the product's use-by instructions. None cites a stability test. [56], [7], [30], [12]

FDA notes that peptides like Epitalon are very sensitive to heat, acidity and how they are made, which can make them clump (aggregation) or break down. Health Canada warns that unauthorized peptides may be improperly made or stored and may contain too much, too little or none of the active ingredient, so careful storage cannot tell you what is in a vial (see product quality). [1], [65]

What do we actually know about Epitalon in people?

A handful of small human studies exist, all from the developer's own research network. None tested the subcutaneous milligram doses sold online, and none measured sleep, telomeres, lifespan or cancer. ClinicalTrials.gov lists no Epitalon study under any of its names. [66], [1]

What did the human studies find?

FDA's 2026 review counted three human studies and noted that the 2007 study was published only in Russian. Its full text gives the injection dose, the numbers and the results above. [1], [18]

What about the studies where older people lived longer?

Those used epithalamin, the cattle pineal extract, not Epitalon. In one, 266 older people were followed for six to eight years, and death rates were 1.6–1.8 times lower with epithalamin courses. A 12-year study in older heart patients reported 28% lower death rates, and a 15-year follow-up compared 39 treated with 40 untreated patients. All three come from the developer's research network. [5], [67], [68]

Those results cannot be transferred to Epitalon: the extract contains many peptides and was sometimes combined with a thymus extract. FDA's review makes the same distinction. [1]

What do these measurements mean?

A higher level of melatonin or of its urine breakdown product, 6-sulfatoxymelatonin, shows the pineal gland released more hormone. It does not show that anyone slept longer or better, felt more rested, or aged more slowly. FDA made this point directly: the effect of the melatonin changes is unclear without a measure of clinical outcomes, and low melatonin has not consistently been linked to insomnia in older adults. [1]

A convincing test, a randomized controlled trial, would randomly assign people with a defined sleep problem to Epitalon or an identical dummy, measure sleep in a sleep lab or with validated questionnaires, record side effects systematically and follow people after the course. None of the published studies did all of these. Explore the evidence behind each claim.

How might Epitalon work?

The developers' idea is that very short peptides act as signals that help switch particular genes on or off. The experiments below test pieces of that idea. Most are preclinical: cell studies in a dish and animal studies, and almost all come from one research network in St Petersburg.

Telomeres and telomerase in cells

In 2003 the developers reported that Epitalon switched on telomerase and lengthened telomeres in human fetal fibroblasts grown in a dish, and in 2004 that treated cells divided at least 10 more times than untreated ones and were still dividing when the report ended. In blood cells from 11 donors, telomeres got longer in cells from five donors and shorter in two. [34], [69], [70]

The first telomere study by an independent team, at Brunel University London in 2025, found that 1 mcg per mL for three weeks lengthened telomeres in normal human fibroblasts and breast cells through telomerase. In two breast-cancer cell lines, telomeres also lengthened after four days, but through ALT, a backup route that cancer cells use. The paper was later corrected to replace three figures. [22], [71]

Melatonin and the pineal gland

In old rhesus monkeys, Epitalon raised evening melatonin and restored the daily rhythm of cortisol, a stress hormone. In pineal cells in a dish, it increased an enzyme that makes melatonin. But when rat pineal glands were kept alive in a flow chamber and exposed to Epitalon directly, melatonin release did not change, in young or old glands. FDA concluded that how Epitalon raises melatonin in the body remains unknown. [72], [73], [74], [1]

Genes, DNA and “antioxidant” effects

Test-tube and cell work reports that Epitalon enters cell nuclei, interacts with DNA and loosens tightly packed chromatin in blood cells from older people. One lab test found no direct antioxidant activity. None of this shows Epitalon changing genes in a living person. [75], [76], [77]

What did the animal lifespan studies find?

Less than the marketing suggests:

• Female mice (SHR strain): 1 mcg by subcutaneous injection five days a month for life did not change average lifespan or total tumor numbers; the longest-lived 10% lived 13.3% longer and leukemia was six times less common. [35]
• Female mice (CBA strain): average lifespan rose 5.3%. [78]
• Rats: average lifespan did not change in females kept under standard light, or in males, though some tumors were less common. [79], [80]
• Fruit flies: lifespan rose 11–16%. [81]

The 52% and 27% “lifespan” figures quoted online come from a 1998 epithalamin study and describe how fast death rates rose with age, not extra lifespan. [82], [53]

Explore every Epitalon experiment in the research library.

What are the risks and unanswered questions?

Is Epitalon safe?

Its safety in people has not been established. Two of the human studies say no side effects were seen and the others do not mention them; none describes how side effects were looked for, and the longest course lasted 20 days. A developer patent reports 1 mg a day into a muscle for 10 days, but no study has given people the 5–10 mg subcutaneous injections sold online. [19], [18], [20], [21], [28]

FDA found no standard toxicity, reproductive or long-term cancer (carcinogenicity) studies. The developer's patent says mice and rats showed no toxic effects, but these are the inventors' own data. FDA's adverse-event database had no reports for Epitalon up to December 2025; because reporting is voluntary, that is not evidence of safety. [1], [3]

What problems have actually been reported?

In public forums, the most common complaint is worse sleep: trouble falling asleep, early waking, or nights of almost no sleep, sometimes with a higher resting heart rate. Other reports include vivid dreams, stinging, lumps or welts at injection sites, grogginess, anxiety, headaches and, in one case, emotional blunting. [23], [24], [83], [84], [85], [59], [86], [60], [87]

Community education groups show the same pattern: roughly 35–40 members describe worse sleep, about 10 grogginess, about 8 headaches and a few injection-site burning. A small cluster describes night sweats with anxiety or an adrenaline-like surge. About eight people describe vials that turned cloudy, gelled or would not dissolve. None of these reports was formally investigated.

Does Epitalon cause cancer, or prevent it?

Nobody knows, and the evidence points both ways. FDA's concern is theoretical but specific: Epitalon switches on telomerase, and long telomeres are associated with a higher risk of cancer, so continuous use could, in theory, help cells avoid the normal limit on dividing. The independent 2025 study found that Epitalon lengthened telomeres in breast-cancer cells as well as normal cells. [1], [22]

The developers' animal studies mostly found fewer or smaller tumors, for example in mice prone to breast cancer, but some found no effect, including on chemically induced bladder cancer and on tumor rates in fast-aging mice. These studies used low doses on intermittent schedules, mostly in female mice. FDA calculated that in one lifelong mouse study, the dosing days added up to at most 22 weeks, so these studies cannot show what longer or higher use would do. [88], [89], [90], [1]

In community education groups, some members with a history of melanoma or advanced cancer were encouraged to use Epitalon without any caution being raised.

Could product quality change the risk?

Yes. FDA judged both forms poorly characterized: nomination paperwork lacked tests for impurities, clumps, bacterial toxins and microbes. Clumps and peptide impurities can make an injected product more likely to trigger an immune reaction (immunogenicity), and FDA's safety list flags Epitalon for this risk. [1], [26]

A 2015 laboratory analysis identified Epitalon in two illegal pharmaceutical preparations, and one clinical slide deck labels a different peptide's chain as Epitalon. No independent testing of Epitalon vials has been published that we could find. [91], [55]

Is Epitalon legal? Is it FDA-approved?

Checked September 23, 2026. Rules differ by country and change quickly. A “research use only” label does not make a product legal to sell or safe to use.

United States. Epitalon is not an FDA-approved drug or part of one. The timeline so far:

• 2010: FDA granted orphan-drug designation for retinitis pigmentosa; it was withdrawn in 2016 without an approval. [36], [1]
• November 2018: a first nomination asked FDA to add it to a list of bulk ingredients for compounding. [1], [92]
• April 2020: FDA sent a warning letter to a Kentucky pharmacy that had compounded products containing Epitalon among other peptides. The letter said Epitalon had not been nominated for the list pharmacies use. [93]
• December 2020: a pharmacy network nominated it for that pharmacy list. Both nominations were later withdrawn, and FDA's safety page lists Epitalon among withdrawn nominations, with a warning about immune reactions. [94], [1], [26]
• May 2026: FDA reviewed both forms on its own initiative for use in insomnia, as the subcutaneous injections at 10 mg per mL or 3,000 mcg per mL proposed in the nominations, and concluded that the evidence weighed against listing them. [1]
• July 24, 2026: FDA's advisory committee voted 7 yes, 4 no and 1 abstention, for each form, to recommend adding it to the list. The vote is advice; FDA makes the final decision. [95], [96]
• September 2026: Epitalon was still not on the list in federal regulations, and no proposed rule had been published. Because it is not listed, has no official monograph and is not part of an approved drug, it does not meet the usual conditions for pharmacies to compound it from bulk ingredients. [97], [98], [95]

September 2010: FDA granted Epitalon orphan-drug designation for retinitis pigmentosa. January 2016: the orphan designation was withdrawn and no product was approved. November 2018: a first nomination asked FDA to add it to a compounding bulk list. April 2020: FDA sent a warning letter to a pharmacy that had compounded products containing Epitalon among other peptides. December 2020: a pharmacy network nominated it for the pharmacy-compounding list; both nominations were later withdrawn. May 2026: FDA's own review for insomnia concluded the evidence weighed against listing. July 24, 2026: FDA's advisory committee voted 7 yes, 4 no and 1 abstention, for both the free base and the acetate, to recommend listing. September 2026: Epitalon was not on the list and no proposed rule had been published; FDA's decision was pending.

Doserly

Epitalon's path through US regulation

Regulator records

Not to time scale.

Sep 2010

FDA grants orphan-drug designation for retinitis pigmentosa

Jan 2016

Orphan designation withdrawn; no product approved

Nov 2018

First nomination for a compounding bulk list (later withdrawn)

Apr 2020

FDA warning letter to a pharmacy compounding Epitalon and other peptides

Dec 2020

Nominated for the pharmacy-compounding bulk list (later withdrawn)

May 2026

FDA review for insomnia: evidence weighs against listing

Jul 24, 2026

Advisory committee votes 7 yes, 4 no, 1 abstain (free base and acetate) to recommend listing

Sep 2026

Not on the list; no proposed rule. FDA decision pending

As of September 2026, FDA had not made a final decision.

Canada. Health Canada names Epitalon among unauthorized injectable peptide drugs it has seized, and says most injectable peptides are regulated as prescription drugs in Canada. Advisories from April 2025 and December 2025 name Epitalon seized from a Calgary wellness clinic and an injectable “Epithalon 10MG” product seized at a Vancouver gym and sold online. Its April 2026 warning says products labeled “For Research Use Only – Not for Human Consumption” are not legal or exempt because of that label. [99], [100], [101], [65]

Australia. Epitalon is not approved in Australia. It is not named in the June 2026 Poisons Standard, and we found no entry for it on the Australian Register of Therapeutic Goods. The TGA's May 2026 warning says personal importation of unapproved peptides is permitted only if the goods are clearly and accurately labelled, and its April 2026 notice adds that importers must meet the scheme's other conditions, including a prescription when required. [102], [103], [104], [105]

United Kingdom. A search of UK government sites, which include the medicines regulator (MHRA), found no authorization or statement for Epitalon or Epithalon. [106]

Russia. Epithalamin, the extract, was approved for medical use in the USSR in 1990, according to an unofficial copy of the order. We found no Russian medicine registration for synthetic Epitalon; the spray from the 2021 study is marketed as a food supplement. [38], [9]

Is Epitalon banned in sport? Does it show up on a drug test?

Epitalon is not named on the World Anti-Doping Agency's 2026 list or on the 2027 list that takes effect on January 1, 2027. Category S0 bans at all times any pharmacological substance that no other section covers and that has “no current approval by any governmental regulatory health authority for human therapeutic use”, and the 2027 list names “peptides” among its examples. WADA has not ruled on Epitalon specifically, so tested athletes should assume S0 can apply. One website marks it “allowed”, which the list does not support. [107], [108], [56]

No published anti-doping test for Epitalon was found, and how long it could be detected is unknown.

Who should be especially cautious?

These groups have no safety data in people. That is a reason for caution, not proof of harm.

• A history of cancer, or a higher risk of it. Because of the telomerase concern FDA describes and the cancer-cell result above. [1], [22]
• Pregnancy and breastfeeding. Never studied in people; in the one rabbit study, labeled Epitalon reached fetal organs. [25]
• Sleep disorders, or medicines that affect sleep. Worse sleep is the most common complaint in public accounts, and no study included people with insomnia. [23], [24], [1]
• Kidney problems. One study in old rats found kidney filtration 21% lower after Epitalon, alongside less protein in the urine; what that means for people is unknown. [109]
• Children and teenagers. No study included anyone under 18, and this guide is written for adults. [19], [28]
• Competitive athletes. See the anti-doping section above.
• People taking other medicines. Interactions have not been studied; see the next question.

Has Epitalon been tested alongside other medicines?

Not in any study designed to look for interactions. In the developer's patents, Epitalon was given alongside asthma medicines, including steroid inhalers and tablets, and alongside tuberculosis treatment, without checking for interactions. Nothing is known about combining it with sleep medicines, melatonin, hormone therapy, GLP-1 medicines (used for diabetes and weight loss), cancer treatment or other peptides. People in public forums often take it with several other compounds at once, which makes any effect, good or bad, hard to pin on Epitalon. Bring a complete list of everything you take to a pharmacist or doctor. [3], [28], [1], [110]

What should be monitored while using Epitalon?

No regulator has written a monitoring plan for Epitalon, because no approved product exists. Below is what the studies measured and the concerns FDA raised. It can help you prepare questions for a clinician; it is not a personal testing plan.

What did the human studies check?

• Melatonin. Blood melatonin at night in the 2007 injection study, and a urine breakdown product of melatonin, collected overnight, in the under-the-tongue studies. [18], [21]
• Body-clock genes. Activity of several clock genes in blood cells in the 2021 spray study. [20]
• Vision. Sharpness of sight, visual field and the retina's electrical response (an electroretinogram) in the eye studies. [19]
• Blood antioxidant markers. In the patent's case series, an antioxidant enzyme (superoxide dismutase) rose and products of fat oxidation fell. [3]
• Not reported. No study published routine blood counts, liver or kidney tests, or a systematic record of side effects. None measured sleep. [1]

What did the animal studies flag?

In old rats, kidney filtration fell 21% while protein in the urine dropped; the authors reported no kidney damage. Mouse studies counted chromosome damage in bone marrow and found less of it, and lifespan studies counted tumors. FDA considers these studies too limited in dose, sex and duration to judge safety. [109], [111], [1]

Which measures matter, and why?

Health Canada advises anyone who has used an unauthorized injectable peptide and feels unwell or has concerns to contact a healthcare professional, such as a doctor, nurse practitioner or pharmacist. [65]

If you track sleep, keep the method the same before, during and after a course; wearables estimate sleep stages differently. How to judge a sleep story.

What do people in public communities report?

Most public accounts are about sleep and come from Reddit users injecting vials, often alongside other peptides, sleep aids or hormone therapy; a few, on longevity forums, report telomere tests. These selected discussions are not a survey of all users. [60], [113]

What do the positive reports look like?

One person with insomnia took 10 mg a day for 10 days and described falling asleep between 10 p.m. and midnight, waking earlier and having more energy, with no side effects. Another, who worked up from 1 mg to 3 mg over 20 days, said sleep improved markedly and stopped taking sleeping pills after the first week. [114], [60]

Others were more modest: sleeping until 5 a.m. instead of 3 a.m. on 5 mg a night, or returning to a midnight-to-8 a.m. pattern on 2 mg in the evenings while quitting caffeine. Vivid dreams often come with these reports. [110], [112], [23], [115]

How long did those changes last?

Accounts differ. One blogger who took 1 mg in the mornings for three 10-day courses over three months reported better sleep scores during courses that faded during breaks, and no change in wrinkles, hair, vision or telomeres. Another said the improvement in sleep wore off, and a third that benefit faded after about three weeks. Others said better sleep lasted months after a short course, including one person who was also taking a prescription sleep medicine. [61], [43], [60], [58], [59]

Does everyone notice a difference?

No. People describe feeling little or nothing after 10 mg a day for 10 days, after 5 mg a night for more than 20 days, and after slowly raising the dose from 250 mcg to 1 mg over 17 nights. One person says a first course helped sleep and a second did not. [43], [110], [58], [60]

Can Epitalon make sleep worse?

Yes, for some people. In one thread titled “Epitalon wrecked sleep”, one person slept not at all on two nights after 500 mcg, and another stopped after nine nights of alternating sleepless and good nights. Someone with a circadian rhythm disorder felt drowsy soon after each dose but did not fall asleep sooner, and their sleep schedule drifted later while using it. [23], [116]

Higher doses were not the only trigger: reports of insomnia range from 100 mcg to 10 mg. Some people fixed it by dosing earlier, sometimes at a lower amount, and others stopped. [62], [84], [24], [23]

What about unwanted effects?

Beyond sleep, public accounts describe lumps or welts at injection sites, grogginess on waking, daytime fatigue with very long sleep, anxiety and headaches, each in a few people and usually alongside other compounds. See reported problems. [85], [59], [87], [86], [60]

What about telomere tests?

A few people report consumer telomere or “biological age” tests. One person who took five 10-day courses at 10 mg a day, using Epitalon and two chemically modified versions, reported a much longer result on a cheek-swab test but felt “exactly the same”, and never posted the promised retest. Another had a younger-than-expected result but could not credit Epitalon for it. None of these tests had a proper comparison. [117], [118], [119]

What do community education groups teach?

Educators in community education groups mostly teach Epitalon as a short-course sleep and longevity peptide. Some lessons call it the most studied bioregulator and credit it with the extract's mortality results; others in the same groups rate the evidence as weak or unsupported. One group teaches stopping after two measured courses with no change, or at once for a new lump or changing mole.

Members' experiences match the public picture: better sleep and vivid dreams are the most common reports, around 40 people noticed nothing, and a substantial minority slept worse. Many were also taking other peptides, sleep supplements, hormone therapy or GLP-1 medicines. Claims that sleep can get worse before it improves have no supporting evidence.

How can you judge a sleep story?

Ask: How was sleep measured, and the same way before and after? What else changed, such as DSIP, melatonin, magnesium, a new hormone dose or a GLP-1 medicine? Was it the first night or the whole course? What happened a month after stopping?

One account shows why: a person's insomnia eased after Epitalon had done little, once they started sleep coaching; another credited better sleep to a new breathing machine combined with Epitalon. These selected discussions are not a substitute for controlled studies. [58], [87]

How does Epitalon compare with epithalamin, Pinealon, DSIP and melatonin?

Epitalon is often discussed alongside its parent extract, a sister peptide from the same program, another “sleep peptide” and melatonin itself. The table compares what each one is and how much human evidence exists.

The real differences are in how much has been tested. Melatonin has been tested in many placebo-controlled trials, with modest effects. DSIP had small placebo-controlled sleep studies with weak results. Epitalon, epithalamin and Pinealon come from the same research group and rest mostly on small studies without random assignment. Only the 2007 study compared Epitalon with epithalamin, and it measured blood melatonin, not sleep or health. No study has compared Epitalon with Pinealon, DSIP or melatonin.

Common questions about Epitalon

Is Epitalon the same as epithalamin?

No. Epithalamin is an extract of cattle pineal glands containing many peptides; Epitalon is one lab-made chain of four amino acids modeled on it. FDA treats them as different substances. The mortality studies in older people and the 10 mg injection schedule belong to epithalamin. [1], [18] See what the human studies found.

Does Epitalon lengthen telomeres in people?

That has not been shown. Telomeres lengthened in cells in a dish, including in an independent 2025 study that also saw it in cancer cells, but no study has measured telomeres in people taking Epitalon. Consumer telomere tests reported online have no proper comparison. [34], [22], [117] See how it might work.

Can Epitalon help with insomnia?

There is no good evidence either way. Small studies found higher melatonin markers in people with low levels, but none measured sleep, and FDA found no study in people with insomnia. Public accounts include both better and worse sleep, and there are approved insomnia treatments with proven effects. [18], [1] See what people report.

Should Epitalon be taken at night or in the morning?

No study has compared timing. Most websites say evening, but the human studies gave it in the morning or early afternoon, and some people who slept worse after evening doses improved when they moved the dose earlier. [12], [18], [20], [24] See evening or morning.

How long does Epitalon take to work?

There is no reliable answer. People who report sleep changes describe anything from the first night to the second or third week, and many notice nothing. Anti-aging effects, if there are any, are not something a person could feel, and no study has tested them in people. [114], [59], [43] See what people report over time.

Is Epitalon a pill, a spray or an injection?

All three are sold. Most sellers offer vials of powder for subcutaneous injection; there are also nasal sprays, an under-the-tongue spray and capsules. Only injections into a muscle or beside the eye, and doses under the tongue, have been studied in people, and never at the usual website amounts. [7], [9], [10], [18] See routes and forms.

Does Epitalon improve memory or focus?

There is no evidence that it does. A research foundation review found no human studies on memory or brain protection, and we found none since. The brain-cell findings come from cells in a dish and rats. [37], [130], [63] See other uses.

Is it legal to buy Epitalon?

It depends on the country. It is not an FDA-approved drug, and US pharmacies generally cannot compound it from bulk ingredients unless FDA adds it to its list, which it had not done as of September 2026. Health Canada lists it among unauthorized peptide drugs. A “research use only” label does not make a product legal or safe anywhere. [1], [97], [65] See the dated legal-status summary.

Glossary

Plain explanations of the route, dosing and research terms used in this guide. Underlined terms in the text link here.

6-sulfatoxymelatonin

The main breakdown product of melatonin, measured in urine collected overnight. More of it means the body made more melatonin; it is not a measure of sleep.

Adverse event

A harmful or unwanted medical event reported after someone used a treatment. A report alone does not prove the treatment caused it.

Advisory committee

A panel of outside experts that votes on questions FDA puts to it. Its votes are advice; FDA makes the final decision and is not bound by them.

Aggregation

Peptide molecules clumping together. Clumps can make a product weaker and, when injected, more likely to trigger an immune reaction.

ALT (alternative lengthening of telomeres)

A backup way of rebuilding telomeres, without telomerase, that some cancer cells use to keep dividing.

Amino acid

A small chemical building block. Chains of amino acids make up peptides and proteins.

Animal study

Research in animals such as rats or mice. It shows what a substance does in a living body, but results in people can differ.

Bioavailability

How much of a dose reaches the bloodstream in a usable form. It depends heavily on the route. For Epitalon it has not been measured by any route.

Bioregulator

The name a Russian research group uses for very short peptides it believes act on particular tissues. It is a research and marketing label, not a regulatory category.

Carcinogenicity study

A long-term animal study designed to detect whether a substance can cause cancer. None has been published for Epitalon.

Cell study (in vitro)

Research on cells grown in a dish. It gives early clues about biology, but it is far from proof of benefit in people.

Circadian rhythm

The body's roughly 24-hour internal clock, which times sleep, hormones such as melatonin and cortisol, and many other processes.

Compounding

When a pharmacy prepares a customized medicine from individual ingredients. In the US, federal lists control which bulk ingredients pharmacies may use.

Controlled trial

A study that compares people who receive a treatment with a similar group who do not, often receiving a placebo instead. Randomly assigning people to each group makes the comparison fairer.

Course and cycle

A course is the period of repeated use, such as 10 days. A cycle is a course plus a planned break before any further use.

Daily total

All the amounts given in one day, added together. For example, 2.5 mg twice daily is a 5 mg daily total.

Dose (amount each time)

The amount given on one occasion. A protocol lists both the dose and how often it is given.

Electroretinogram (ERG)

A test that records the retina's electrical response to light, using sensors on or near the eye.

Epithalamin

An extract of calf pineal glands containing many peptides, developed in Russia before Epitalon. Epitalon was modeled on it, but FDA treats them as different substances.

Fibroblast

A cell that builds and maintains connective tissue, mainly by making collagen. Fibroblasts are often used in lab studies of cell aging.

Freeze-dried (lyophilized)

Dried by freezing and removing the water, leaving a powder. Most Epitalon is sold this way and mixed with liquid before injection.

Half-life

The time it takes for the measured level of a substance in the blood to fall by half. It is not the same as how long an effect lasts. It has not been measured for Epitalon.

Immunogenicity

The ability of a product to provoke an immune response, such as antibodies or an allergic reaction. Impurities and clumps can make injected peptides more immunogenic.

Intramuscular (IM)

Injected into a muscle.

Intranasal

Sprayed or dripped into the nose. How much Epitalon is absorbed this way has not been measured.

Investigational

Still being studied and not approved by a regulator, such as the FDA, to treat any condition.

mcg and mg

Micrograms and milligrams. 1 mg equals 1,000 mcg. Epitalon website amounts are usually in mg; the human studies used mcg.

Melatonin

A hormone released by the pineal gland, mainly at night, that helps time sleep and the body clock. It is also sold as a supplement.

Oral

Taken by mouth, as a capsule, tablet or liquid.

Orphan-drug designation

A status FDA can give a product being developed for a rare disease. It offers development incentives; it is not an approval.

Parabulbar injection

An injection into the tissue beside the eyeball, used by eye specialists to deliver medicine close to the eye.

Peptide

A short chain of amino acids. Epitalon is a chain of four, called a tetrapeptide.

Pharmacokinetics

How the body absorbs, moves, breaks down and removes a substance. No such data exist for Epitalon.

Pineal gland

A small gland deep in the brain that releases melatonin, mostly at night. It shrinks and calcifies with age in many people.

Placebo

A dummy treatment with no active ingredient, used as a comparison in studies.

Preclinical research

Studies done before research in people: cell studies, tissue studies and animal studies.

Reconstitution

Mixing a freeze-dried powder with a liquid so it can be measured and injected. The amount of liquid sets how much peptide each unit holds.

Research use only

A label on products sold for laboratory research. It does not mean a product is approved, tested for human use or legal to sell as a medicine.

Retinitis pigmentosa

A group of inherited eye diseases in which the retina's light-sensing cells slowly die, narrowing vision and causing night blindness.

Subcutaneous (SC)

Injected into the fatty layer just under the skin. This is the route most Epitalon protocol descriptions use, though no human study has tested it.

Sublingual

Placed under the tongue to dissolve or be absorbed. Two small Epitalon studies used this route.

Syringe units

Markings on an insulin syringe that measure volume. On a U-100 syringe, 100 units equal 1 mL. The amount of drug per unit depends on the vial's concentration.

Telomerase

An enzyme that rebuilds telomeres. Most adult cells make little of it; many cancer cells make a lot.

Telomere

A protective cap of repeated DNA at each end of a chromosome. Telomeres shorten as cells divide, and very short telomeres stop cells dividing.

Titration

Adjusting a dose in steps, usually starting lower and increasing if needed.

WADA

The World Anti-Doping Agency, which publishes the list of substances banned in sport.

Withdrawal and rebound

Withdrawal effects are symptoms caused by stopping a substance. A rebound is a problem returning worse than before after stopping. Neither has been studied for Epitalon.

Explore more of the research

Go deeper into the experiments behind the claims.

Across this guide, the citations include 39 original scientific papers on synthetic Epitalon: a few small human studies and many cell, tissue, animal and laboratory studies. Four more concern epithalamin, the extract, and are cited to keep the two apart, and five concern the compounds in the comparison table. The developer's patents are counted separately. The library below explores 33 of these papers, grouped by question. Paper counts are not counts of independent research teams: almost all come from one research network.

In the route details, subcutaneous means into the fatty layer under the skin and intramuscular means into a muscle.

How this guide was researched

This guide is built from a thorough review of the sources cited throughout it: published scientific studies, patents, trial-registry searches, regulatory documents, an advisory-committee recording and published protocol descriptions. We also reviewed public online forums and community education groups where people describe their own experiences with Epitalon.

The guide cites 138 sources, including 48 original scientific papers. Each type of source answers a different question. Studies show what researchers measured. Protocol descriptions show how Epitalon is typically used. Personal accounts show what individual people experienced. Every numbered citation links to its entry below, labeled by source type.

How this guide was made

Research and drafting were AI-assisted. Every cited source was checked against the original, and the guide was reviewed and edited by Doserly before publication. It has not had an independent clinical review, and Doserly does not currently have medical reviewers. Doserly makes a medication and health-tracking app and runs Doserly Academy, both of which are promoted in this guide. Read our editorial policy for how guides are researched, updated and corrected.

This guide is for educational purposes. It summarizes what the reviewed sources report so the research is easier to understand; it is not medical advice. For a deeper dive, or to check any point for yourself, go straight to the cited sources.

Explore the sources