IGF-1 DES(1-3)

IGF-1 DES(1-3) is a naturally occurring variant of insulin-like growth factor 1 (IGF-1) that lacks the first three amino acids. Researchers study it for its reduced binding to IGF binding proteins, resulting in higher bioavailability and potent localized anabolic effects.

In the literature, IGF-1 DES(1-3) appears most often in work focused on muscle growth, injury recovery and healing. Studies in this area tend to look at mechanisms and observed effects in laboratory and preclinical settings rather than outcomes in people, so the picture is best read as a map of where researchers have been curious — not as evidence of any benefit.

IGF-1 DES(1-3) is catalogued here under powder peptides. Coverage of this compound varies in quality and depth, and much of it remains early-stage. Reading the underlying research directly is the only way to judge how strong any particular finding is.