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Turkesterone

Marketed as a non-hormonal natural anabolic

Evidence · Grade DSafety · Use with caution
Traditional useSafety cautionInteraction riskNeeds more research

Ecdysteroid extracted from Ajuga turkestanica, marketed as a natural anabolic; human evidence is very limited and does not consistently show muscle or testosterone benefits.

Last reviewed June 1, 2026 · AI-assisted, human-reviewed
Turkesterone is an ecdysteroid — a class of plant/insect steroid hormones — most commonly extracted from the plant Ajuga turkestanica. It has been popularized in the fitness world as a "natural anabolic" alternative to anabolic-androgenic steroids, with the appeal of supposedly building muscle without androgenic side effects or HPG-axis suppression. Human evidence remains thin. The best-known RCT in resistance-trained men using ecdysterone (a related ecdysteroid) showed modest muscle gains, but a more recent, well-controlled trial of standardized Ajuga turkestanica found no significant effects on body composition or testosterone. Quality and standardization of commercial products are also highly variable.

Quick answer

What it is: Turkesterone is an ecdysteroid — a class of plant/insect steroid hormones — most commonly extracted from the plant Ajuga turkestanica.

May support:Hypogonadism (Low Testosterone)

Evidence:Evidence · Grade D

Safety:Safety · Use with caution

Evidence Summary

Evidence · Grade D

Very limited high-quality human data, with mixed results for muscle and no consistent effect on testosterone. Product quality varies widely.

Last reviewed · Jun 2026

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Commonly Combined With

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Why It Works

Ecdysteroids may bind estrogen receptor beta and influence protein synthesis pathways, but human muscle and hormone effects are inconsistent.

How it works in more detail

Ecdysteroids, including turkesterone, are hypothesized to exert their anabolic effects by binding to the estrogen receptor beta (ERβ). This binding is thought to stimulate protein synthesis pathways in skeletal muscle, potentially leading to increased muscle mass and strength. Unlike traditional anabolic steroids, ecdysteroids are generally not believed to interact with androgen receptors, which theoretically minimizes androgenic side effects. However, the precise molecular pathways and the extent of these effects specifically for turkesterone in human physiology require further investigation.

How to use

Always consult a qualified clinician.

Editorial guidance

Suggested dosage
500 mg/day of a 10% turkesterone-standardized extract is the most commonly used dose; quality varies widely between brands.
Research dosage range
200–1,000 mg/day of standardized extract in available studies.
Typical onset
Subjective effects (recovery, training output) often reported within 4–8 weeks.
Typical forms
Capsules (standardized extract), Powder
Quality markers
When considering turkesterone supplements, look for products from reputable manufacturers that provide third-party testing for purity and potency. Check for clear labeling of the active ingredient and its concentration. However, even with these markers, the overall efficacy remains unproven.
Medication interactions
  • Hormone therapy
  • Estrogen-modulating drugs (theoretical)
Avoid if
  • Hormone-sensitive cancers (theoretical, via ER-beta)
  • Pregnancy and breastfeeding
  • Children and adolescents
Pregnancy / lactation
Not recommended during pregnancy or breastfeeding due to lack of safety data.

Community tips

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Suggested dosage

500 mg/day of a 10% turkesterone-standardized extract is the most commonly used dose; quality varies widely between brands.

General guidance — discuss specifics with a clinician.

Active medicinal compounds

Ecdysteroids (turkesterone, ecdysterone) and related sterols

Traditional use

Ajuga turkestanica has been used in Central Asian folk medicine as a general tonic.

Safety

Safety warnings

Choose products with third-party assay confirming turkesterone content. Avoid stacking with other ecdysteroids or undisclosed "test boosters". Long-term safety data are absent.

Avoid if

  • Hormone-sensitive cancers (theoretical, via ER-beta)
  • Pregnancy and breastfeeding
  • Children and adolescents

Medication interactions

  • Hormone therapy
  • Estrogen-modulating drugs (theoretical)

Reported side effects

  • Mild GI upset
  • Headache
  • Rare allergic reactions

Pregnancy & lactation

Not recommended during pregnancy or breastfeeding due to lack of safety data.

General guidance — discuss specifics with a clinician.

Evidence ecosystem

Scientific literature, clinical guidance, government sources, ongoing research, traditional use, and lived experience — grouped by source type and quality.

No indexed evidence yet. We're still building out this remedy's evidence ecosystem.

Limitations: A major limitation is the absence of human clinical trials, particularly randomized controlled trials, to assess efficacy, safety, and optimal dosing. The existing information is largely derived from animal studies or in vitro research on ecdysteroids in general, which may not accurately reflect turkesterone's effects in humans. There is also a lack of standardized research protocols and reporting.

This page is educational. Statements use phrases like "may support" and "has been studied for"because no remedy here is approved to cure, treat, or reverse any condition. Discussion happens on the ailment pages — community statistics here are derived from those reports. Always consult a qualified clinician.

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