Lyophilized *MUST BE RECONSTITUTED* IGF-1 LR3 is a synthetic modified version of insulin-like growth factor-1, designed for extended activity. Research indicates that IGF-1 LR3 can stimulate cell division and growth, boost fat metabolism, and promote muscle repair and hypertrophy by inhibiting myostatin. Recent studies also suggest its potential utility in improving lactation in mothers with young offspring.