Troponin University
IGF-1 LR3 monograph
Justin Harris — IFBB Pro Coach
Written & affirmed by Justin Harris — August 31, 2026 · 7 min read
From Justin
IGF-1 LR3 is a niche drug with more hope and hype than hard human evidence could ever account for. The pharmacokinetics of IGF-1 LR3 are very interesting, but the real-world results just never panned out. If you’re trying to get bigger, the gains are not well proven in humans, while the legal and safety downside is real. This is not a beginner tool, and it is not something I’d treat casually or pair with insulin unless you know exactly what you are doing medically.
Justin Harris — IFBB Pro Coach, Troponin Nutrition. The same coaching reasoning drives the TroponinIQ AI coach.
IGF-1 LR3
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Source attribution
- [1]Troponin Nutrition knowledge base — Igf 1 Lr3