Lab-Verified Research Peptides
IGF-1 LR3 research peptide

IGF-1 LR3

IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a synthetic, modified analogue of endogenous IGF-1 with an arginine substitution at position 3 and a 13-amino acid N-terminal extension. These modifications significantly reduce its binding to IGF-binding proteins (IGFBPs), resulting in a much longer half-life (20–30 hours vs ~12minutes for native IGF-1). It signals primarily through the IGF-1 receptor (IGF-1R), activating the PI3K/Akt and MAPK/ERK pathways to drive muscle growth, fat metabolism, and cellular repair. It is one of the most potent anabolic and tissue-regenerating peptides available.

Choose your dosage

  • Purity: 99%
  • Form: Lyophilized Powder

Description

DEFINITION

IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a synthetic, modified analogue of endogenous IGF-1 with an arginine substitution at position 3 and a 13-amino acid N-terminal extension. These modifications significantly reduce its binding to IGF-binding proteins (IGFBPs), resulting in a much longer half-life (20–30 hours vs ~12minutes for native IGF-1). It signals primarily through the IGF-1 receptor (IGF-1R), activating the PI3K/Akt and MAPK/ERK pathways to drive muscle growth, fat metabolism, and cellular repair. It is one of the most potent anabolic and tissue-regenerating peptides available.

KEY BENEFITS

ā–  Potent anabolic effect — stimulates muscle cell hyperplasia (new muscle cell formation) and hypertrophy

ā–  Enhances nutrient uptake into muscle cells, improving protein synthesis and recovery

ā–  Promotes fat oxidation by shifting the body toward using fat as a primary fuel source

ā–  Supports tissue repair and regeneration — tendons, cartilage, and connective tissue

ā–  Extended half-life provides sustained IGF-1 receptor activation compared to native IGF-1

Available Quantities

1mg

Disclaimer:

All products are sold for research and laboratory use only.