What is Cardarine (GW501516)?

The short answer

Cardarine is a lab-made compound, taken as a pill, that is not a steroid or a hormone.

Get updates on Cardarine (GW501516)

What it is

Also known as
gw1516, endurobol

Regulatory status

Not FDA-approved How we label status

As of October 4, 2026, Cardarine (GW501516) is not FDA-approved for any use and is not on FDA's 503A bulks list.

See Cardarine (GW501516) in the Index →

Federal (FDA)
Not FDA-approved; FDA WL 719257 calls 'Cardarine GW501516' an unapproved new drug
503A compounding
No category; not on 216.23 as of 2026-10-07 (as of October 7, 2026)
WADA 2026
S4.4.1 (PPAR-delta agonists; named GW1516, GW501516)

References

Sources as of October 4, 2026

  1. FDA warning letter, December 12, 2025
  2. WADA: www.wada-ama.org/sites/default/files/2025-09/2026list_en_final_clean_september_2025.pdf
  3. eCFR: www.ecfr.gov/current/title-21/chapter-I/subchapter-C/part-216/subpart-B/section-216.23