PeptideHelper.org
Your evidence-based peptide reference
Research reference only. Not medical advice. Most compounds are not FDA-approved. Consult a qualified clinician before any human use.

Growth Hormone Secretion

IGF-1 LR3

Long R3 IGF-1; LR3-IGF-1

Classification: IGF-1 analog (extended half-life); anabolic

Mechanism: IGF-1 receptor agonist; Arg3 substitution reduces IGFBP binding for prolonged activity

Benefits: Muscle hyperplasia and growth; cellular proliferation; nutrient partitioning

Evidence tier: Anecdotal + Animal Studies · Availability: Research Chemical

Primary sources

  1. Hammon H et al. The somatotropic axis in neonatal calves can be modulated by nutrition, growth hormone, and Long-R3-IGF-I. Am J Physiol 1997. PMID 9252489

Loading interactive view…