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Follistatin 344

Also known as: FS-344, FST-344, Follistatin

Emerging ResearchGrowth Hormone OptimizationProvider Rx Required

How It Works

Activin-binding glycoprotein that neutralizes myostatin, the primary negative regulator of muscle growth. By blocking myostatin, allows enhanced muscle hypertrophy and reduces adipose tissue.

What It's Used For

Muscle growthMyostatin inhibitionFat lossStrengthBody composition

Administration

Route: Subcutaneous injection

Typical Cycle: 10-30 day course, repeat every 3-6 months

Safety & Side Effects

Possible Side Effects

⚠Potential fertility impact (FSH suppression)
⚠Joint discomfort
⚠Limited long-term safety data

Contraindications

✘Active cancer
✘Pregnancy
✘Reproductive concerns (affects FSH)

Research Summary

Myostatin inhibition is one of the most promising pathways for muscle growth. Follistatin 344 showed muscle mass increases in animal studies. Human data is limited but growing interest in clinical applications.

References

Lee SJ et al. PLoS One. 2010
Kota J et al. Hum Mol Genet. 2009

Legal & Availability

Research chemical

This peptide requires a prescription from a licensed provider.

Dosing Protocol

Standard: 100mcg per dose

Frequency: Daily

Timing: Morning or post-workout

Notes: 10-30 day course; effects persist weeks after discontinuation

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Unlock Full Dosing Protocol

Specific dosing, frequency, timing, cycling schedules, and stacking guidance are available with a BioRoot AI Pro subscription.

Stacks Well With

IGF-1 LR3

Muscle growth, Recovery

Ipamorelin

Anti-aging, Fat loss

BPC-157

Injury repair, Gut healing

Full stacking protocols and cycling schedules available with Pro subscription.

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This information is for educational purposes only and is not medical advice. Do not use any peptide without consulting a qualified healthcare provider. BioRoot AI is a clinical decision support tool — not a medical provider.