HomeBody MapPeptidesCalculator
Catalog10 refs

Follistatin 344

Healing & RecoveryPerformance & Body CompositionResearch use only
Educational use only. Not medical advice. Verify all information with primary sources and a licensed clinician before use.
Not Well Characterized In Humans
Half-life
9
Uses
100
Typical
Body Map
Loading 3D model…
Muscles
Overview

Follistatin-344 (also known as FS-344, FST-344) is a peptide studied for myostatin inhibition, muscle growth, sarcopenia and muscle wasting models, and skeletal muscle mass studies. Strong evidence from AAV gene therapy studies shows 20%+ muscle mass increases in animal models. No human clinical trials exist for the subcutaneous form; dosing is based on animal studies and community protocols.

Primary Uses
Muscle wasting conditions
Performance enhancement
Muscle growth
Muscular dystrophy (gene therapy research)
Muscle hypertrophy
Myostatin inhibition
Muscle growth research
Sarcopenia and muscle wasting models
Skeletal muscle mass studies
Protocol Reference
Dose
100–200 mcg per injection
Frequency
Daily or every other day for 10-30 days; or 2x weekly for 8-12 weeks
Half-life
Not Well Characterized In Humans
Route
Subcutaneous
Evidence
Phase 2 / Animal studies and community protocols; no human clinical trials for subcutaneous form (disputed)
Research References· 15
High serum follistatin levels in women with ovarian endometriosis↗
DOI79409-1)
Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance.↗
PubMedPMID 41966639Sports Med2026Mendias CL, Awan TM
Current Pharmacological Strategies for Duchenne Muscular Dystrophy.↗
Europe PMCPMID 34490244Front Cell Dev Biol2021
Research Models
HumanMousePig
Also in Healing & Recovery
Healing & Recovery
ARA-290 (Cibinetide)
Nerve pain · Small fiber neuropathy
Healing & Recovery
BPC-157
Wound healing · Tendon repair
Healing & Recovery
Cartalax (AED peptide)
Joint and connective tissue support · Anti-aging effects on fibroblasts
Healing & Recovery
Chonluten (EDG)
Normalizes respiratory system function · Regulates protein synthesis in lung tissue
Compare