IGF-1 LR3
IGF-1 LR3 is a modified version of insulin-like growth factor 1 with structural changes that reduce its binding to carrier proteins. These modifications increase its potency and extend how long it stays active in the body compared to natural IGF-1.
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IGF-1 LR3
For research purposes only. PeptideWiki may earn a commission at no extra cost to you.
Overview of IGF-1 LR3
Activates IGF-1 receptors with enhanced potency due to reduced binding protein sequestration, stimulating muscle protein synthesis, cell proliferation, and anti-apoptotic signaling.
Binds IGF-1 receptor (IGF-1R) with similar affinity to native IGF-1, activating PI3K/Akt and MAPK/ERK signaling cascades that drive muscle protein synthesis.
Reduced affinity for IGF binding proteins (IGFBPs) results in more free circulating peptide and enhanced bioactivity compared to recombinant IGF-1.
Promotes satellite cell activation and muscle fiber hypertrophy, supporting lean mass gains.
Stimulates proliferation and differentiation of multiple cell types including myoblasts, chondrocytes, and osteoblasts.
Activates anti-apoptotic pathways (proposed), promoting cell survival under stress conditions.
Exhibits insulin-like activity at higher concentrations, promoting glucose uptake and potentially causing hypoglycemia.
Extended half-life (~20-30 hours vs ~12-15 hours for native IGF-1) allows for once-daily dosing protocols
Read Full IGF-1 LR3 Dosage Guide
Research-backed dosing protocols, timing, and administration details
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Growth Hormone / IGF-1 Axis
