Is there human research on IGF-1 LR3?

No. This site's review of the published record found citations describing its use in animal models for muscle growth and satellite cell activation, but no published human trial. That gap is the honest answer for anyone asking whether its effects in animals have been confirmed in people: as of this review, they have not been tested in a published human study.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of growth hormone secretagogues. Sermorelin, tesamorelin, ipamorelin, CJC-1295, and the rest of the GHRH and ghrelin receptor family.