Follistatin 315 vs Pancragen
Side-by-side comparison of key properties, dosing, and research.
Anabolic & IGF
Follistatin 315Anti-Aging & Longevity
Pancragen- Summary
- Follistatin 315 is a splice variant isoform of follistatin produced by alternative mRNA processing. Unlike Follistatin 344 which is tethered to cell surfaces via heparan sulfate proteoglycans, FST-315 circulates freely in the bloodstream and has broader systemic distribution. It is the predominant circulating form and exerts systemic myostatin inhibition as well as FSH suppression, making it relevant to both muscle growth and reproductive endocrinology.
- Pancragen is a tripeptide bioregulator (Lys-Glu-Asp) developed by Professor Vladimir Khavinson, tissue-specific for the pancreas. It supports the function of both exocrine and endocrine pancreatic cells, promotes normalization of insulin secretion from beta cells, and may offer protective effects against pancreatic aging and diabetic progression.
- Half-Life
- ~3–5 hours (longer systemic circulation vs FST-344)
- Short (minutes); sustained gene-regulatory effects
- Admin Route
- SubQ, IM
- SubQ, Oral
- Research
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- Typical Dose
- No established human dosing protocol
- 10 mg per day
- Frequency
- Research use only
- Daily for 10–30 days
- Key Benefits
- Systemic myostatin inhibition for whole-body muscle growth
- Freely circulating — broader tissue distribution than FST-344
- Strong FSH-suppressive activity useful in certain hormonal protocols
- Potential for greater anabolic effect across multiple muscle groups simultaneously
- May be more relevant to reproductive endocrinology applications
- Studied in gene therapy approaches for muscular dystrophy
- Supports pancreatic beta cell function and insulin secretion
- May improve glucose metabolism in early metabolic dysfunction
- Protective effects on exocrine pancreatic tissue
- Anti-aging effects on pancreatic cells
- Potential support in type 2 diabetes management alongside standard care
- Reduces pancreatic cellular apoptosis from metabolic stress
- Complementary to GLP-1 agonists in metabolic protocols
- Side Effects
- Systemic FSH suppression — significant concern for fertility
- Greater potential for off-target effects vs FST-344 due to systemic distribution
- Limited human safety data
- Potential cardiac hypertrophy with prolonged high-dose exposure
- Generally well tolerated
- Mild injection site reactions
- No significant hypoglycemic events reported at standard doses as monotherapy
- Stacks With
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