Androstenediol.
Research-backed compound with potential health benefits. It's a prohormone, meaning it converts in the body to other hormones. It can become testosterone, but it also readily converts to estrogen, causing unwanted side effects.
Reviewed March 2026
- Category
- Compound
What Androstenediol is, and what it does.
- Does it work
- No. It's illegal to sell as a supplement and carries significant hormonal risks. There are dozens of safer, legal, and more effective options for building muscle or supporting hormones.
- How much to take
- The only safe dose is zero. Pre-ban, users experimented with 50-100 mg daily, but that's playing with fire. Don't do it.
- Time to feel it
- Blood steroid readings move within hours of a dose, and that is a lab measurement. Nobody has measured a reliable time to any change a person would notice.
- The first dose
- Nothing significant. Hormonal changes take days or weeks. You might notice some initial water retention or bloating.
- With regular use
- This is where the problems start. Suppressed natural testosterone, potential for male breast growth, acne, and negative changes to your cholesterol profile. Hard pass.
- How well tolerated
- Not safe. It's classified as an anabolic steroid under US law for a reason. Messing with your endocrine system without medical supervision is a terrible idea.
- How it feels
- Less like a health supplement, more like a low-grade, sloppy steroid. Any potential strength benefit is coupled with bloating, moodiness, and other hormonal side effects.
- The overlooked benefit
- It is regulated as an anabolic steroid in the United States, so it is not a lawful supplement ingredient there and any product carrying it sits outside that framework.
50 to 100mg a day is where Androstenediol works.
Source: Prohormone research; now banned in many countries
The proof, claim by claim.
These words describe the research, not the molecule's worth. Research strength is how much work stands behind one claim, and it is never a product score.
Androstenediol is documented in the library; the clinical read is in the queue. Nothing about the strength of the research prints until the read is done.
- Conversion to androgenic and estrogenic steroid metabolitesRandomised trial
- Body composition and strength alongside resistance training, where controlled work did not detect a difference from placeboRandomised trial
- Immune signallingAnimal study
- Mixed androgen and estrogen receptor bindingIn vitro study
Questions people ask about Androstenediol.
- Is Androstenediol a steroid?
- Yes. It's legally classified as a Schedule III anabolic steroid in the United States.
- Is it legal to buy?
- No. Not over-the-counter. It was banned for sale as a dietary supplement in the US in 2004.
- Will it actually boost my testosterone?
- Slightly, but it's inefficient and also boosts estrogen. It can also shut down your body's own testosterone production, making you worse off in the long run.
- What are the main side effects?
- Water retention, acne, potential hair loss, mood swings, and gynecomastia (male breast tissue growth).
- What's a safer alternative?
- For strength, use creatine. For hormone support, consider well-researched options like Tongkat Ali or Fadogia Agrestis. For actual low testosterone, see a doctor.
- Is this the stuff baseball players used?
- You're thinking of Androstenedione, a close cousin. Both are part of the same family of banned prohormones from that era.
Why these belong in the same formula. Each row says what the basis is, from settled biochemistry through to a trial that measured the pair.
Dehydroepiandrosterone and androstenediol sit one enzymatic step apart, connected by 17-beta-hydroxysteroid dehydrogenase acting on the 17-keto group. Circulating androstenediol therefore tracks with DHEA and its sulphate ester. Anything that changes DHEA supply changes the pool this compound is drawn from. This is steroid biochemistry, not a tested pairing.
Pregnenolone is converted to 17-hydroxypregnenolone and then to DHEA by CYP17A1, and DHEA is reduced onward to androstenediol. The three sit on one linear delta-5 branch. Co-supplementation loads the same branch at different points, which is the mechanistic basis for seeing them discussed together.
Zinc sits in the zinc-finger DNA-binding domain of the androgen receptor and influences aromatase activity in tissue work. Since androstenediol both binds the androgen receptor weakly and can be aromatised onward to estrogenic metabolites, zinc status touches both ends of its handling. The relationship is mechanistic and the direction of any net effect is not established.
Sex hormone binding globulin determines how much of a circulating androgen is unbound and available to tissue. Magnesium has been reported to lower SHBG binding affinity in laboratory work, which would shift the free fraction without changing total concentration. Free fraction is a marker of availability, not an outcome.
Small human studies of boron report changes in the free-to-total androgen ratio and in SHBG. Because androstenediol travels bound to the same carrier proteins, a change in carrier handling would alter what reaches tissue. The evidence base is small and the finding is a marker shift rather than a demonstrated effect.
Vitamin D signalling runs through a nuclear receptor of the same superfamily as the androgen receptor, and steroidogenic enzyme genes carry vitamin D response elements. That gives a plausible route by which vitamin D status touches androgen synthesis. It is a gene-regulation observation and not a clinical result for this compound.
Nothing specific on file for Androstenediol. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.What Androstenediol actually does.
Androstenediol, properly 5-androstene-3-beta,17-beta-diol, is formed from dehydroepiandrosterone by 17-beta-hydroxysteroid dehydrogenase reducing the 17-keto group, and the step is reversible.
It sits on the delta-5 steroid branch, so conversion onward to testosterone requires 3-beta-hydroxysteroid dehydrogenase with its delta-5 to delta-4 isomerase activity.
Like other delta-5 steroids it circulates largely bound to albumin and sex hormone binding globulin, so the unbound fraction rather than the total concentration is what reaches receptors.
Aromatase can act on downstream delta-4 metabolites of this branch, which is the accepted route by which androgen precursors raise estrogenic metabolites as well as androgenic ones.
Where Androstenediol comes from.
It comes out of a factory, not a plant extract bottle. Chemists start with a steroid skeleton from wild yam or soy, cut off the part they do not want, adjust one oxygen atom, then crystallise and test what is left.
Chemically synthesised. The molecule is identical to the one a plant or an animal makes, and building it deliberately means a known purity, a fixed dose and no crop contaminants. For several nutrients this is the only route that reaches a usable amount.
Production starts from a steroid skeleton found in plants, most often diosgenin from Dioscorea species, or from soy-derived sterols such as stigmasterol.
The sapogenin side chain is removed, classically by the Marker degradation sequence, or sterols are cut down microbially to androstenedione-type intermediates. Both routes give a usable androstane core; the chemical route uses stronger reagents while the microbial one runs milder and needs a fermentation train.
The 17-keto group is reduced to the 17-beta-hydroxyl to give the diol, either by chemical hydride reduction with the 3-hydroxyl protected, or enzymatically with a 17-beta-hydroxysteroid dehydrogenase.
Related steroid isomers and process intermediates are separated by recrystallisation, sometimes with a chromatographic polish, because the near-identical isomers are the hard impurities here.
Identity is confirmed by melting point, HPLC against a reference standard and spectroscopy, with limits set on residual solvents and on the closely related steroid isomers.
The crystalline solid is milled and either filled into capsules or built into a fast-dissolving sublingual matrix.
The forms it comes in.
The essence, in one line each.
- Sublingual androstenediol taken around a resistance exercise session produced no detectable difference in the hormonal response compared with placebo.Randomised trial. Brown et al., 2006 (European Journal of Applied Physiology). PMID 16636857 ↗
- Serum androgen and estrogen concentrations were measured over several hours after a single sublingual androstenediol dose in young men; the endpoints are circulating hormone markers, not performance or body-composition outcomes.Randomised trial. Brown et al., 2002 (Journal of Applied Physiology). PMID 11744653 ↗
- A review of dehydroepiandrosterone and its metabolite 5-androstenediol setting out the receptor and immune-signalling targets that have been proposed for them and what remains untested in people.Narrative review. Fedotcheva et al., 2024 (Pharmaceuticals). PMID 39338348 ↗
- Changes in static postural balance after an exercise programme correlated with the measured steroid profile, androstenediol among the steroids assayed; a correlation within an observational analysis, not a cause.Cohort study. Kornatovska et al., 2025 (Metabolites). PMID 40278368 ↗
- A bidirectional two-sample mendelian randomisation reporting a genetically instrumented association between circulating metabolite levels, androstenediol among them, and an age-related eye outcome; genetic association work, not a supplementation result.Case-control. Liu et al., 2024 (Hereditas). PMID 39707561 ↗
These are the studies our verdict leans on, chosen from the 313 we read for Androstenediol. The full linked list is below.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.