SARMs, GW1516, MK-677, BPC-157, and GH peptides are sold online as research chemicals. Every one is banned in sport, and most have little or no human safety data.
Many of these drugs were abandoned in development or never studied in humans. GW1516 was dropped after it caused cancers in animal studies.
A 2017 JAMA analysis found many products sold as SARMs were mislabeled or contained other unlisted drugs. Unregulated injectables add sterility risks.
Athletes are responsible for any prohibited substance found in their sample, whatever the label said or the seller promised.
Educational content only. FirstPass does not provide dosing, sourcing, or testing information for these compounds.
See what it depletes, why that matters for training, and whether it is allowed in sport. Covers the 300 most-prescribed U.S. drugs, common supplements, research compounds, and every substance named on the WADA 2026 Prohibited List.
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SARMs, GW1516, MK-677, BPC-157, and GH peptides are all banned in sport, and most have little or no human safety data.
Many of these drugs were abandoned in development or never studied in humans. GW1516 was dropped after it caused cancers in animal studies.
A 2017 JAMA analysis found many products sold as SARMs were mislabeled or contained other unlisted drugs. Unregulated injectables add sterility risks.
Athletes are responsible for any prohibited substance found in their sample, whatever the label said or the seller promised.
Educational content only. No dosing, sourcing, or testing information.
What it depletes, why it matters, and whether it's allowed in sport.
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