What is RAD-140 (testolone)?

The short answer

RAD-140 is a lab-made compound that is studied in research on the same system as male hormones.

What it is
Non-steroidal compound that binds the androgen receptor in a selective way.
What people look into
Muscle and exercise

6 sources
Status as of October 4, 2026
How we source
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By Ellum EditorialPublished October 6, 2026Updated October 11, 2026AI use

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Peptides: RAD-140 (testolone) (1 selected) · edit

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What it is

Type: Selective androgen receptor modulator (SARM), non-steroidal
Also known as: vosilasarm
How it works: Non-steroidal compound that binds the androgen receptor in a selective way.

Regulatory status

Not FDA-approved How we label status

As of October 4, 2026, RAD-140 (testolone) is not FDA-approved for any use and is not on FDA's 503A bulks list.

See RAD-140 (testolone) in the Index →

Federal (FDA): Not FDA-approved; FDA: SARMs 'cannot be legally marketed in the U.S. as a dietary supplement or drug'
503A compounding: No category; not on 216.23 as of 2026-10-07 (as of October 7, 2026)
WADA 2026: S1.2 (named RAD140)

Timeline

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Date	What happened	Source
February 14, 2022	FDA debarment notice in the Federal Register lists RAD140 among drug ingredients imported in the conduct behind the underlying conviction.	Federal Register, event of February 14, 2022, on federalregister.gov
July 6, 2022	FDA warning letter states that products marketed as SARMs, including testolone (RAD-140), are unapproved new drugs.	FDA, event of July 6, 2022, on fda.gov
December 12, 2025	FDA warning letter states that products marketed as SARMs, including RAD-140 (testolone), are unapproved new drugs.	FDA (1 of 3), event of December 12, 2025, on fda.gov FDA (2 of 3), event of December 12, 2025, on fda.gov FDA (3 of 3), event of December 12, 2025, on fda.gov

US enforcement actions

1 US enforcement action, in 2023.

Actions by US federal and state agencies whose documents name RAD-140 (testolone). Each row links to the government's own document.

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Date	Agency	Action	Document
June 12, 2023	FDA	Warning letter	FDA document, warning letter, June 12, 2023, on fda.gov

References

Sources as of October 4, 2026