A pharmaceutical composition for enhancing male erectile function comprising an erectile function-enhancing amount of an insulin-like growth factor selected from the group consisting of IGF-1 (Somatmedin-C) and analog LR3 IGF1 in admixture with a pharmaceutically-acceptable diluents or carrier. Such compositions optionally further comprise compounds selected from an androgen, particularly, testosterone and dihydrotestosterone, a vasodilator, PDE5 inhibitor and prostaglandin E1.
