In this guide
What is Cistanche?
Cistanche is not one standardized exposure. New training data use C. deserticola, cognition and fatigue trials combine C. tubulosa with ginkgo, and EFSA did not establish safety for a proposed water extract. EFSA reviewed a Cistanche tubulosa water extract proposed at up to 2 g/day and concluded that safety had not been established. That proposed maximum is not a safe intake level or a dosing recommendation. [1]
Typical Cistanche Protocols
| Source and population | Form and amount each time | Frequency | Total exposure | Duration or boundary |
|---|---|---|---|---|
| Tao 2025 · 48 men | C. deserticola dry extract, DER 2:1; paper conflicts on 5 g/day vs 5 g twice daily | One sachet after breakfast and lunch | Internal report conflict; do not resolve by inference | 8 weeks + resistance training 3×/week |
| Kan 2021 · 190 randomized, 175 analyzed | C. tubulosa 300 or 450 mg + ginkgo 120 or 180 mg per tablet | Once daily | Combination exposure | 60 days; trivial effect sizes |
| Chen 2024 · 100 randomized | Daily pair: cistanche 300 mg + ginkgo 120 mg; echinacoside 72 mg + flavonol glycosides 27 mg | One tablet twice daily with meals | Two tablets/day combination | 90 days; cannot isolate cistanche |
These rows reproduce sources. Do not average them into one universal regimen.
From source to outcome
Combinations are separate.
5 g/day vs 5 g twice daily.
2 g/day was proposed, not endorsed.
Which forms and label details matter?
Record species (C. deserticola or C. tubulosa), stem material, dry extract or paste, extraction ratio, echinacoside/phenylethanoid specification and every co-ingredient. Ginkgo combinations cannot establish cistanche-alone effects.
How should it be stored?
Follow the label, close the container and protect it from heat, light and moisture.
Read the label before the claim
Keep species, part and extract together.
A daily total does not reveal the schedule.
Biomarkers do not replace clinical outcomes.
What is it commonly used for?
Products are marketed for energy, cognition, libido, testosterone, exercise and healthy aging. Human findings are formulation- and population-specific and do not establish a general tonic regimen.
What does human research show?
Tao randomized 48 trained and untrained men to C. deserticola or placebo alongside eight weeks of supervised resistance training. The paper reports strength and biomarker changes, but its abstract and methods conflict on whether extract exposure was 5 g/day or 5 g twice daily; this guide does not resolve that discrepancy by guessing. [2] Kan tested cistanche–ginkgo combinations once daily for 60 days in 190 adults with fatigue symptoms; 175 entered per-protocol analysis, effect sizes were described as trivial, and the two ingredients cannot be separated. [3] Chen likewise tested a cistanche–ginkgo combination for 90 days, not cistanche alone. [4]

How might it act?
Phenylethanoid glycosides such as echinacoside are proposed as marker compounds, but marker content is not proof of a clinical mechanism. Species and co-ingredients change the exposure.
How does it compare with related products?
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What are the risks and interactions?
EFSA noted 12 exposure-related adverse events across an integrated set of 1,076 vascular-dementia patients at 1,800 mg/day, including cerebral hemorrhage and epilepsy classified as severe, plus major toxicology limitations; it concluded safety was not established. [1] This does not quantify risk for every product, but it rules out treating 2 g/day as an endorsed safe dose. Review seizure history, bleeding risk, neurologic disease, pregnancy, breastfeeding and ginkgo co-exposure.
Which medicines require review?
Have the product reviewed with medicines, before surgery, and during pregnancy or breastfeeding. No universal separation interval is established.
Regulatory status: In the United States, supplements generally lack premarket efficacy approval. In Canada, verify the finished product’s NPN or DIN-HM and licensed conditions. [5], [6]
What should be monitored?
Record product, lot, form, amount per administration, frequency, daily total, co-ingredients, meals, symptoms, medicines, chosen outcome and review date.
What happens when it is stopped?
No ingredient-specific withdrawal syndrome is established. Record the stop date, symptoms and chosen outcome; seek care for a persistent serious symptom.
Seek prompt care for a serious allergic reaction, unusual bleeding, persistent palpitations, chest pain or another severe symptom.
What do public communities report?
Public reports can suggest questions to track, but they do not verify the product, dose or causality. This update did not newly quantify a community sample.
Common questions about Cistanche
Does cistanche improve strength?
One 2025 training trial reported changes, but its dose text conflicts and all participants trained; replication is needed.
What dose did Tao 2025 use?
The paper is internally inconsistent. This guide preserves the conflict instead of guessing.
Do cognition trials prove a cistanche effect?
No. The cited trials combined cistanche with ginkgo.
Did EFSA approve 2 g/day as safe?
No. It was the applicant’s proposed maximum, and EFSA concluded safety was not established.
Are C. deserticola and C. tubulosa interchangeable?
No. Species, extract and marker composition differ.
What should I track?
Species, part, extract ratio, markers, amount each time, frequency, co-ingredients, symptoms and review date.
Glossary
Terms for reading the evidence.
- Extract identity
- Species, plant part, solvent or ratio, and any standardization used to define a preparation.
- Amount per administration
- Amount taken at one time, distinct from daily total.
- IPSS / AUASI
- Questionnaires rating lower urinary tract symptom severity; they do not diagnose the cause.
- Qmax
- Maximum measured urinary flow rate.
- PSA
- A prostate-related blood marker; it is not a stand-alone cancer test.
- Monotherapy
- The ingredient was tested without another active intervention.
How this guide was researched
Accessible official sources and human reports were read on October 9, 2026. Titles, authors, journals, DOI, PMID and visible corrections were checked. An unreported frequency was not guessed.
How this guide was made
Research and drafting were AI-assisted. This draft awaits Doserly editorial review and independent clinical review. See the editorial policy.
Explore the sources
Sources preserve form, amount, frequency, population, duration and outcome.
Showing 6 sources
- 01
Safety of water extract of Cistanche tubulosa stems as a Novel food pursuant to Regulation (EU) 2015/2283. ↗
Regulatory safety opinion
Current page or report reviewed; scope and limits retained.
Detail: Safety not established; applicant-proposed 2 g/day is not an endorsed safe dose.
- 02
Effects of Cistanche deserticola Y.C. Ma Supplementation on Muscle Strength and Recovery: A Randomized Controlled Trial. ↗
Randomized training trial
Current page or report reviewed; scope and limits retained.
Detail: 48 men; internal dose-description conflict preserved.
- 03
A Botanical Product Containing Cistanche and Ginkgo Extracts Potentially Improves Chronic Fatigue Syndrome Symptoms in Adults: A Randomized, Double-Blind, and Placebo-Controlled Study. ↗
Combination randomized trial
Current page or report reviewed; scope and limits retained.
Detail: 190 randomized; cistanche plus ginkgo; trivial effect sizes.
- 04
A randomized, double-blind, placebo-controlled study of Cistanche tubulosa and Ginkgo biloba extracts for the improvement of cognitive function in middle-aged and elderly people. ↗
Combination randomized trial
Current page or report reviewed; scope and limits retained.
Detail: 100 adults; two tablets daily for 90 days; ingredients not isolated.
- 05
Dietary Supplements ↗
Regulatory overview
Current page or report reviewed; scope and limits retained.
Detail: U.S. supplement framework.
- 06
Product Licensing ↗
Regulatory overview
Current page or report reviewed; scope and limits retained.
Detail: Canadian licensing context.
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