Precise levels of vitamins A, D, and E have been structured in Nature’s Formula IGF-1 to increase the levels of Insulin-like growth factor serums required to natural increase the levels of retinoic acid to stimulate the growth of cellular performance in muscle, bone, and antler tissues during the seasonal transformation period that occurs in all species of antlered deer, antelope, wild sheep, and goats annually during the spring and summer months.