Turkesterone dosage and evidence
Written by Aaron CuhaReviewed Sep 2026
The short answer
Turkesterone is the best-selling supplement in this family, and the one with no study in people at all. Its reputation is borrowed from a related molecule that was actually tested.
Evidence grade for Turkesterone: None. The rule: no study cited on this page yet. A grade counts how much has been done to people, not whether it works.
- People given it
- 0
- Human studies
- 0
- Found nothing
- 0
Dose
No human dose established
No published study on this page has given this compound to people and reported a result.
no study cited on this page yet
6 effects reported, 4 unwanted, 2 wanted, by people using it, not a trial
Goal pages: Muscle and strength
In plain English
In plain English, from Aaron
This is how I would explain it to a friend. The evidence, with the numbers, is further down the page.
Turkesterone is a plant steroid sold as a muscle building pill. It comes from a plant called Ajuga turkestanica. It is the best seller in its family. It has never been tested in people.
What people take it for
- More muscle without real steroids.
- More strength.
- Some people think it raises testosterone.
What studies in people showed
Nobody has tested turkesterone in people. Not once. Nobody has even checked how much gets into the blood when you swallow it. The muscle and strength results in the ads came from ecdysterone, a close cousin. That is a different molecule. The only work on turkesterone itself is in a dish and in animals.
What people report
Reports, not study results
The good
- Some people report a noticeable change.
- People who liked it compare it to anything from creatine to a low dose steroid pill. That tells you more about what they hoped for than what happened.
The bad
- Many people report nothing at all.
- Doubters point out it has not been shown to raise testosterone.
- People say safety information is sparse, with animal work standing in for it.
- Buyers do not trust the labels. Some have paid labs to test store products to see if the turkesterone is really there.
Where these come from: Forum patterns from Bluelight, MESO-Rx and T-Nation, read in September 2026. These are not from a study. There are no studies in people.
My bottom line
This is a borrowed reputation. The study everyone quotes was on a different molecule. I would not spend money on something nobody has tested in a single person.
An opinion, not a finding. I am a coach, not a doctor.
What it has been measured to do
What people using it report
Real people telling you what happened to them. Nobody checked it, and the people who post are not a fair sample, so it cannot prove anything works. It is still the best guide on this page to what people actually do with Turkesterone, what they expect, and what goes wrong. The full account, including the negative reports, is below.
Nothing indexed yet
The 2 citations on this page do not report a result for any of the 36 goals indexed here. Most of what sits here is something else: a listing of a planned study, a study of how the body handles the drug, a safety report or a government record. None of those tests whether it works.
Show full evidence
What is Turkesterone?
Turkesterone is the best-selling supplement in this family, and the one with no study in people at all. Its reputation is borrowed from a related molecule that was actually tested.
Turkesterone is the one in this family that the supplement ads push hardest. The honest thing to say about it is short. Nobody has tested turkesterone in people. The only work is in a dish, in animals, and in reviews.
Here is what happened. Ecdysterone is a close cousin. It has a study in people that found more muscle and more bench press strength. Its drug version was tested in 233 older adults. Those results belong to ecdysterone. Turkesterone looks similar, comes from a different plant, and is sold on the name those studies made.
Looking similar is not proof. It is a reason to run a study, and nobody has.
How does Turkesterone work?
Turkesterone comes from a plant called Ajuga turkestanica. It is almost the same shape as ecdysterone, with one small extra piece. The idea is the same as for the rest of the family. It is meant to work through one of the estrogen receptors and tell muscle to build protein, without touching the testosterone receptor. Nobody has checked whether it does that in people at doses you can take. Most of a swallowed dose of this family never reaches the blood. Nobody has measured blood levels of turkesterone in people, so we do not even know if enough gets in.
What have studies in people found about Turkesterone?
None. No study in people of any kind, and nobody has measured how much reaches the blood.
- No study of turkesterone in people exists.
- All the work is in a dish, in animals, or in reviews.
- Nobody has measured blood levels after a swallowed dose, so we do not know if enough gets in to matter.
- The results in people quoted in turkesterone ads came from ecdysterone, a different molecule.
What this does not tell you: Everything. There are no results in people, good or bad, and that is the finding. No study also means no safety data. The common claim that it is safe because it is natural and not like testosterone is a guess from how it might work, not something anyone measured. Nobody checks what is in the tub either. How much turkesterone a product really contains is not tested by anyone.
What do people who took Turkesterone report?
This is what real people say happened to them, good and bad. Nobody measured it. A report cannot tell a real effect from the lift people get just from expecting it to work, from a diet or training change made at the same time, or from what was really in the vial. We still put it near the top. It is the next best thing to a study in people: what happens when real people use it, including what goes wrong.
- Opinion is split and neither side is fringe. Accounts range from noticeable change to nothing at all, and the split is not explained by dose in these threads because no dose consensus exists in them.
- The sceptical position, argued at length, is that it has not been shown to raise testosterone and that anything that truly built muscle like a steroid would not be sold openly through mainstream retail, which people treat as a tell.
- Comparisons offered for scale vary wildly, from roughly creatine to a low dose oral steroid, which tells you more about what people expected than about what happened.
- Confusion about what it does in the body recurs. People note that muscle claims are made without the hormonal feedback that would normally accompany them, and nobody in the threads resolves how that is supposed to work.
- Human safety information is described as sparse, with animal work standing in for it, and product quality is a live topic including laboratory testing of retail products to see whether the labelled content is present.
Sources: A Bluelight thread on reported effects and side effects, found by site-restricted search and read directly, September 2026, with MESO-Rx product testing and T-Nation discussion seen only through search extracts because those boards refused direct fetch. Nothing above is attributed to any specific post and no post is reproduced.
The state of the research
Ecdysteroids are steroid hormones that control shedding of the shell in insects. Some plants have them too, like spinach, quinoa and Ajuga turkestanica. They are not built like testosterone and do not attach to its receptor. That is where the claim comes from that they build muscle without steroid side effects. Read this family together, not one at a time. Ecdysterone, also called 20-hydroxyecdysone, has a study in people that found more muscle and bench press strength. Its drug version was tested in 233 older adults losing muscle with age, and missed its main target when everyone was counted. Turkesterone, the one the ads push hardest, has never been tested in people at all. Results for one member do not carry over to another. The one with the most proof is not the one sold hardest.
Turkesterone is the clearest case on this site of a borrowed reputation. It is worth naming, because it is everywhere in supplements. A study is done on molecule A. Molecule B looks similar, costs less or is easier to sell, and it takes over the study. Buyers read about the study and buy B.
The fix is one question: was the study done on the thing in the bottle? For turkesterone the answer is no. That does not mean it does nothing. It means nobody has checked. The right answer for an untested product is to say so, not to borrow a cousin's result.
The evidence, in charts
Fig. 1a · how many people
1study in people cited, but none says how many people took part
number of people not stated
We do not draw a total, because none of the studies in people on this page gives one. Read the sources below for what each study measured.
We read the number of people from the source lines on this page. Where a line gives no number, we count nothing for it. We do not guess.
Fig. 1b · evidence mix
1 of 2 sources here is a study in people. The rest is not.
- Study in people · done in people150%
- Review of studies · sums up other studies150%
Counted from the list of sources on this page. It counts only what we cite, so there may be more studies out there. A review counts once, however many studies it sums up.
Fig. 2 · evidence over time
Sources here come from just two years, 2019 and 2024.
Too few different years on this page to draw a timeline.
Fig. 3 · legal status at a glance
US
Not approved
UK
Not approved
AU
Not approved
CA
Not approved
Not approved in any of the four countries shown. This is what the law says, not a verdict on the science. See Legal status below for the full text and any notes.
Fig. 4 · how much does what
Nobody has tested different amounts in people
This chart would show how the effect changes as the amount goes up. For this compound, nobody has measured that in people. So we leave it empty. We will not borrow an animal chart and pretend it works the same in people.
Fig. 5 · what the molecule is
- Kind of compound
- Supplement
- Molecule weight
- 496.6 Da. An ecdysteroid, not a peptide.
- Half-life
- Stated in words, not a numbersee the exact wording below
- Chain length
- None on file
Half-life as stated on file: Not asserted. No human pharmacokinetic data for turkesterone was resolved in the sources loaded.
No amino acid sequence is on file for Turkesterone, which is expected: a supplement is not built from amino acids.
The studies we cite
- Study in people2019Ecdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans
Turkesterone's reputation rests on a study that never tested turkesterone. The study people quote used ecdysterone, a different molecule, and found gains in muscle and bench press strength. Nothing in it is about turkesterone. Being related is not the same as being the same. Nobody has run that study on turkesterone. Treat the claim as borrowed, not earned.
The human trial turkesterone's reputation is borrowed from, and it tested a different molecule. Ecdysterone increased muscle mass and one-repetition bench press performance in a controlled human trial. Nothing in it concerns turkesterone.
This study gave people ecdysterone, not Turkesterone. It is here because it belongs on the record, and it is excluded from every count on this page.
- Review of studies2024Ecdysterone and turkesterone: compounds with prominent potential in sport and healthy nutrition
A review that covers both turkesterone and ecdysterone. It shows where the proof sits. The results in people belong to ecdysterone. The case for turkesterone rests on animal and lab work and guesswork.
A review covering both compounds together. Useful for the mechanistic background and important for what it shows about the balance of evidence: the human data in this field belongs to ecdysterone, and turkesterone's case is preclinical and inferential.
Common questions
Has Turkesterone been tested in people?
Not in any study cited here. Turkesterone is the best-selling supplement in this family, and the one with no study in people at all. Its reputation is borrowed from a related molecule that was actually tested.
What is the Turkesterone dosage?
No human dose established. No published study on this page has given this compound to people and reported a result. no study cited on this page yet
Is Turkesterone FDA-approved?
Sold as a dietary supplement. Not an approved drug, and not approved for any use.
Does turkesterone build muscle?
Nobody knows. It has never been tested in people. The muscle and strength results quoted for it came from ecdysterone, a related but different molecule. Looking similar is a reason to run a study, not a stand-in for one.
Is it safe?
Nobody has measured it. The usual argument is that it is natural and does not touch the testosterone receptor. That is a guess from how it might work, not data. With no study in people there is no safety data in people. Nobody checks how much turkesterone a product really contains, either.
Should I take ecdysterone instead?
Ecdysterone is the one with results in people. One study found more muscle and more bench press strength. Two catches. The biggest test of that molecule, in older adults losing muscle, missed its main target. And the team behind the strength study said it should be banned in sport, which matters if you compete.
Why is it so popular then?
Because the results for a close cousin got stuck to it. That happens a lot with supplements. The question to ask of any supplement is simple: was the study done on the thing in the bottle?