Follistatin 344 vs ARA-290
Side-by-side comparison of key properties, dosing, and research.
Anabolic & IGF
Follistatin 344Immune SupportRecovery & Repair
ARA-290- Summary
- Follistatin 344 is a recombinant form of the endogenous follistatin protein. It inhibits myostatin and activin — the primary negative regulators of muscle growth — potentially removing the genetic ceiling on muscle development. It is one of the most theoretically powerful anabolic compounds but is experimental with limited human data.
- ARA-290 is a synthetic 11-amino acid peptide derived from the helix B region of erythropoietin (EPO). Unlike EPO, it selectively activates the innate repair receptor (IRR) without stimulating hematopoiesis, providing tissue protection, anti-inflammation, and neuropathy relief.
- Half-Life
- ~24–36 hours
- ~2–4 hours (SC administration)
- Admin Route
- SubQ, IM
- SubQ
- Research
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- Typical Dose
- 100 mcg
- 4 mg (fixed dose)
- Frequency
- Once daily
- Once daily
- Key Benefits
- Inhibits myostatin — removes muscle growth ceiling
- Significant increases in muscle mass and strength
- Reduces fat mass
- Promotes bone density
- May stimulate hair follicle cycling
- Anti-fibrotic effects in muscle tissue
- Synergistic with IGF-1 and other anabolic peptides
- Reduces neuropathic pain from small fiber neuropathy
- Anti-inflammatory without immune suppression
- Tissue protection after ischemia/reperfusion injury
- Promotes nerve fiber regeneration
- Improves symptoms of sarcoidosis-associated neuropathy
- May reduce insulin resistance and improve metabolic health
- Shown to improve autonomic neuropathy symptoms
- Side Effects
- Muscle soreness (from rapid hypertrophy)
- Potential reproductive effects (activin inhibition)
- Unknown long-term safety profile
- Possible esophageal effects at high doses (animal data)
- Injection site reactions
- Mild fatigue at initiation
- Transient warm sensation post-injection
- Rare: mild headache
- Stacks With
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