What is Rapamycin (sirolimus)?

The short answer

In the US, you need a prescription to get Rapamycin (sirolimus).

2 sources
Status as of October 4, 2026
How we source
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By Ellum EditorialUpdated October 4, 2026AI use

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Peptides: Rapamycin (sirolimus) (1 selected) · edit

Peptides you're interested inRapamycin (sirolimus)

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What it is

Type: mTOR inhibitor (not a peptide)
Also known as: rapamune, rapa, rapamycin longevity, low dose rapamycin, fyarro, hyftor

Regulatory status

FDA-approved (Rx) How we label status

As of October 4, 2026, Rapamycin (sirolimus) is an FDA-approved prescription drug for renal-transplant rejection prophylaxis.

See Rapamycin (sirolimus) in the Index →

Federal (FDA): Approved Rx (Rapamune NDA021083 1999 / NDA021110 2000; Fyarro NDA213312 2021; Hyftor gel; generics); label: renal-transplant rejection prophylaxis. Boxed warning. Longevity use is off-label
503A compounding: Approved-drug component (not in any 503A category) (as of May 14, 2026)
WADA 2026: Not named

References

Sources as of October 4, 2026