Follistatin-344
Activin-Binding Protein (344 Amino Acid Isoform)
344 Amino Acids · MW: ~36,000 Da
Amino Acids
344
Molecular Weight
~36,000 Da
Half-life
~several hours
Research Score
4.2
Studies
134
Storage
N/A
What is Follistatin-344?
Follistatin-344 is a naturally occurring glycoprotein that binds and neutralizes myostatin and activin, two proteins that limit muscle growth. By inhibiting these muscle growth inhibitors, follistatin promotes significant muscle hypertrophy and strength gains. The 344 isoform is the most commonly studied.
Key Benefits & Mechanisms
Myostatin inhibition (muscle growth brake removed)
Significant muscle hypertrophy
Increased strength
May improve fertility
Enhanced muscle recovery
Fat reduction through increased lean mass
Does not require exercise to show effects
Research Summary
Follistatin has strong pre-clinical evidence for muscle growth through myostatin inhibition. Gene therapy approaches using follistatin have entered human clinical trials for muscular dystrophy. Direct peptide administration data is more limited. Exciting potential but needs more human research.
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