What are the key numbers?
How does it work?
IGF-1 LR3 is a modified form of IGF-1, the hormone that carries out many of growth hormone’s effects. Its changes stop it binding to IGF-binding proteins, so it stays active much longer than natural IGF-1. Research focuses on muscle cell growth and recovery.
What does the research say?
Published studies, strongest evidence first.
- Animal study
In rats given a muscle-wasting steroid, LR3 IGF-1 was about 2.5 times more potent than standard IGF-1.
Biochem J, 1992 · PubMed - Review
Review grading GH-axis peptides by evidence; notes some, including IGF-1 LR3, lack human studies.
Front Endocrinol (Lausanne), 2026 · PubMed
What should you know?
- Most research is still in animals. Results may differ in people.
- For research and education, not medical advice. Talk to a health professional before using any peptide.
Frequently asked questions
What is IGF-1 LR3?
A modified, longer-acting form of IGF-1 used mainly as a lab reagent; studied in animals and cells, with little or no human data.
How strong is the evidence for IGF-1 LR3?
Most research is still in animals. Results may differ in people. This summary covers 2 published studies, each labelled by study type.
Is IGF-1 LR3 registered with BPOM?
No. IGF-1 LR3 from Continue is a research-grade compound, not a medicine, and is not registered with BPOM.
Where can I buy IGF-1 LR3 with a COA in Indonesia?
Continue sells research-grade IGF-1 LR3 with a COA for every batch, shipped cold across Indonesia.
