FST-315
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Cross-checked against 50–100 independent sources per claim — the house standard. How this reference is checked
Reference values as published in the research record — not a recommendation, instruction, or dose suggestion for any person. Not medical advice.
Reference values as published in the research record — not a recommendation, instruction, or dose suggestion for any person. Not medical advice.
Step 1 of 5 · Draw diluent
Draw your bacteriostatic water into the syringe.
Follistatin 315 is the shorter circulating follistatin isoform (the dominant cleavage product of FST-344) that binds and neutralizes myostatin to promote muscle hypertrophy. It is sold as a distinct product from FST-344, but human evidence for the injectable peptide is essentially absent and community dosing is not validated by any trial. It is WADA-banned.
The full published spec sheet — dose units, timing, frequency, and cycle length — is included with membership.
The published dose for this compound, shown as reference. Included with membership.
Reference values as published in the research record — not a recommendation, instruction, or dose suggestion for any person. Not medical advice.
The live calculator — enter any vial size, diluent volume, and syringe size to see the draw computed — is included with membership.
