Legal status · United States
Is Ecdysterone legal in the United States?
Written by Aaron CuhaReviewed Sep 2026
Direct answer
Ecdysterone can be sold in the United States as a supplement or cosmetic ingredient, classified as "Sold as a supplement". That is not drug approval: FDA has not evaluated any health claim, and injectable or "research use only" versions fall outside supplement rules, so that label does not make human use lawful. On the evidence, 3 human studies are cited on its profile.
Ecdysterone in the United States at a glance
| Classification | Sold as a supplement |
|---|---|
| Note | Sold as a dietary supplement. Not approved as a drug. The researchers who ran the positive human trial recommended it be added to the World Anti-Doping Agency prohibited list, which would make it a banned substance for competitive athletes without changing its supplement status. |
| FDA approval status | Sold as a dietary supplement in the United States. Not an approved drug. Its pharmaceutical form, BIO101, is investigational. |
| Human studies cited | 3 of 3 citations on the profile |
| Reviewed | Sep 2026 |
Classification and note come from the Ecdysterone profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
Ecdysterone can be sold in the United States as a supplement, food or cosmetic ingredient under the classification above, without drug approval.
- 02
Supplement status means FDA has not evaluated any health claim; manufacturers are responsible for safety and labeling, and quality varies by product.
- 03
Injectable or "research use only" versions are not supplements. That label does not make human use lawful, and injectables fall under medicines rules.
What Ecdysterone is
The one ecdysteroid with a positive controlled human trial: more muscle mass and more bench press strength, with the authors recommending it be added to the doping ban list.
Ecdysterone is the ecdysteroid worth taking seriously, and its most-cited human study is unusual in two respects. First, the result was positive.
Mechanism: A polyhydroxylated steroid that does not bind the androgen receptor, which is the mechanistic reason it is proposed to build muscle without androgenic effects. The best-supported route is signalling through the estrogen receptor beta, activating the phosphoinositide 3-kinase and Akt and mTOR pathway to increase muscle protein synthesis.
Regulatory history: Sold as a dietary supplement in the United States. Not an approved drug. Its pharmaceutical form, BIO101, is investigational.
How FDA treats this kind of product
Approves prescription drugs by indication and polices unapproved products, including peptides sold online. Compounding pharmacies may prepare some compounds under a prescription when the FDA places them on a permitted bulk-substances category.
The classification above is the The Longevity Archive reading of U.S. Food and Drug Administration listings for Ecdysterone at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.
Ecdysterone in other countries
Frequently asked questions
Is Ecdysterone legal in the United States?
Ecdysterone can be sold in the United States as a supplement or cosmetic ingredient, classified as "Sold as a supplement". That is not drug approval: FDA has not evaluated any health claim, and injectable or "research use only" versions fall outside supplement rules, so that label does not make human use lawful. On the evidence, 3 human studies are cited on its profile. Note: Sold as a dietary supplement. Not approved as a drug. The researchers who ran the positive human trial recommended it be added to the World Anti-Doping Agency prohibited list, which would make it a banned substance for competitive athletes without changing its supplement status.
Can I buy Ecdysterone in the United States?
Yes, in supplement or cosmetic form. In the United States Ecdysterone is classified as "Sold as a supplement", so oral, topical or cosmetic products can be sold under supplement rules. Injectable versions and products labeled "research use only" are not supplements and are not approved for human use. Note: Sold as a dietary supplement. Not approved as a drug. The researchers who ran the positive human trial recommended it be added to the World Anti-Doping Agency prohibited list, which would make it a banned substance for competitive athletes without changing its supplement status.
Is Ecdysterone FDA approved?
No. FDA status: Sold as a dietary supplement in the United States. Not an approved drug. Its pharmaceutical form, BIO101, is investigational.. Current US classification: "Sold as a supplement". On the evidence, 3 human studies are cited on its profile.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Ecdysterone live on its compound profile.
Ecdysterone profileThis page is general information about the regulatory status of Ecdysterone in the United States, current as of Sep 2026. It is not legal advice, and classifications change; check U.S. Food and Drug Administration directly or consult a lawyer for a specific situation. Educational use only. This database summarizes published research. It is not medical advice and contains no dosing protocols or recommendations for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.