Peptide Reference
Follistatin-344
Follistatin-344
A naturally occurring protein that inhibits myostatin, a negative regulator of muscle growth. Synthetic version used for muscle hypertrophy and performance enhancement.
Status
research
Category
muscle
Typical cost
$150-300/vial (1mg)
Mechanism
Binds to and neutralizes myostatin and related proteins (GDF-11, activin), removing the 'brakes' on muscle growth. Allows for significantly enhanced muscle protein synthesis and satellite cell activation.
Potential benefits
- Significant muscle growth
- Enhanced strength
- Reduced myostatin activity
- Improved recovery
- Muscle preservation
Reported side effects
- Unknown long-term safety
- Potential tendon issues
- Injection site reactions
- High cost
Common dosing references
subcutaneous
50-100mcg · Daily or EOD
4-8 weeks
Research notes
Follistatin gene therapy in muscle disease
2017
Demonstrated dramatic muscle growth in animal models and early human trials for muscular dystrophy
Regulatory and sourcing notes
Research chemical only. Not FDA-approved. Gene therapy versions under investigation for muscle diseases.
Research peptide with very limited availability. Extremely expensive. Experimental for performance use.
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