Peptide therapy Growth hormone

IGF-1 LR3

What it is and what people take it for, in plain language.

Updated October 2026Further reading

What is IGF-1 LR3?

A modified version of insulin-like growth factor 1, changed so it binds less to the proteins that normally carry and restrain IGF-1.

What do people take IGF-1 LR3 for?

Muscle growth and recovery.

Should I talk to a physician about IGF-1 LR3?

If you are considering it, or already using it, a physician can look at your history, your labs and your goals, and at what else might explain what you are hoping to change. At Aether Medicine in King of Prussia, near Philadelphia, or by video for patients in Pennsylvania.

Or call 484-806-1101

Further reading

  1. Rosenbloom AL. Mecasermin (recombinant human insulin-like growth factor I). Adv Ther. 2009. pubmed.ncbi.nlm.nih.gov/19198769/
  2. Murphy N, et al. Insulin-like growth factor-1, insulin-like growth factor-binding protein-3, and breast cancer risk: observational and Mendelian randomization analyses with about 430 000 women. Ann Oncol. 2020. pubmed.ncbi.nlm.nih.gov/32169310/

Educational information only, not medical advice. Reading this page does not create a physician-patient relationship.

Curious about IGF-1 LR3?Talk to a physician about your goals. No payment online.