IGF-1 LR3
Long-chain analogue of insulin-like growth factor 1 with extended half-life. Binds IGF-1 receptors to promote muscle protein synthesis and cellular growth.
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Also known as:
igf1lr3igf-1lr3igf lr3long r3 igfigf1
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Community Q&A
- What does IGF-1 LR3 do?
- Community accounts describe IGF-1 LR3 primarily as a muscle protein synthesis amplifier — acting on IGF-1 receptors throughout the body rather than locally like MGF. The most consistently described effect: accelerated muscle recovery and growth when combined with resistance training, with body composition changes visible within 4–6 weeks. Hypoglycaemia appears as the most commonly cited risk — accounts consistently mention monitoring blood glucose and avoiding dosing on an empty stomach.
- How long does IGF-1 LR3 stay active?
- Community accounts describe the half-life as approximately 20–30 hours, consistent with once-daily dosing being the dominant protocol in confessions. The Long R3 modification prevents binding to IGF binding proteins, which extends activity but means systemic rather than localised action. Accounts describe dosing post-workout in the majority of reports. Cycle lengths in community accounts range from 4 to 6 weeks, with planned breaks to prevent receptor downregulation.