# Follistatin 344

> Myostatin-binding protein fragment researched for muscle growth.

Source: https://peptides.cafe/peptide/follistatin-344
Category: Muscle · Myostatin Inhibition
Tag: Muscle

## Mechanism
A naturally occurring glycoprotein that binds and neutralizes myostatin and activin, releasing the natural brake on skeletal muscle growth in preclinical models.

## Research areas
- Muscular dystrophy models
- Skeletal muscle hypertrophy
- Age-related sarcopenia (preclinical)

## Common research protocols
- Subcutaneous research dosing: Short cycles in animal hypertrophy studies.

## Study summaries
- "Follistatin gene delivery enhances muscle growth and strength" — Science Translational Medicine (2009): Demonstrated durable hypertrophy in primate models.

## Considerations
- Off-target effects on activin signaling (reproductive, cardiac) are a concern.
- Not FDA-approved; banned by WADA.

## Disclaimer
Educational content only. Not medical advice, diagnosis, or treatment. Most research peptides are not FDA-approved for human therapeutic use. Consult a licensed clinician before any use.