Peptide / GH Axis

IGF-1 LR3

Long-acting IGF-1 analog — 3x more potent than native IGF-1. Systemic exposure (not site-specific). Potent anabolic and anti-catabolic. SERIOUS hypoglycaemia risk.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference dose20–60 mcg SubQ or IM post-workout

Half-life12 hours

Risk flaghigh

Regulatory noteResearch-only flag

Side effects and watch-outs

⚠️ Hypoglycaemia (potentially severe) — ALWAYS have fast glucose available
Organ/tissue growth with chronic supraphysiological use
Lethargy
Headache
Joint pain
⚠️ Cancer promotion concern — elevated IGF-1 is a known tumour growth factor
Do not use with personal or family history of cancer