Follistatin
Written by Alejandro Reyes
Founder & Lead Researcher
Reviewed by Peptide Nerds Editorial · Updated April 2026
Key Takeaway
Follistatin is a glycoprotein that inhibits myostatin, the protein that limits muscle growth. By blocking myostatin, follistatin allows for enhanced muscle development.
| Type | Metabolic |
| FDA Status | Research Only |
| Evidence Level | Preliminary |
| Typical Dose | 100 mcg daily |
| Frequency | Once daily |
| Key Goals | muscle-growth |
How it works
Binds and neutralizes myostatin and activin, removing the natural brake on muscle growth and allowing greater muscle hypertrophy.
Benefits
- Myostatin inhibition
- Enhanced muscle growth potential
- Improved body composition
Side effects
- Very limited human data
- Theoretical concerns about uncontrolled tissue growth
Dosing protocol
Typical Dose
100 mcg daily
Frequency
Once daily
Highly experimental. Gene therapy approaches also being studied.
Deeper on Follistatin
Full breakdowns of every part of the Follistatin research base.
What you will need
Basic supplies for reconstitution and subcutaneous injection.
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Bacteriostatic Water (30mL)
$8-15Required for reconstituting lyophilized peptides. 30mL is standard.
Insulin Syringes (1mL, 29ga)
$12-20 (100ct)1mL insulin syringes with 29-gauge needles for subcutaneous injection.
Alcohol Prep Pads
$5-10 (200ct)Sterile 70% isopropyl alcohol wipes for injection site prep.
Sharps Container
$8-15FDA-cleared sharps disposal container for used needles. See FDA guidance for compliant containers.
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Medical Disclaimer: This content is for informational and educational purposes only. It is not intended as medical advice or a substitute for professional medical consultation, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any peptide protocol.