Dietary Supplement. New. Daily Male Performance Formula. Maximum Strength Daily use Male Performance Formula*. Powerful, Clinically Studied Ingredients for Sexual Health*. Enhances Blood Flow for Extreme Results* Frank J. Costa M.D. and acclaimed urological surgeon and men s health expert is part of the GNC Medical Advisory Board. One of "America s Top Physicians," Dr. Costa lectures nationally and internationally on men s health topics. Dr. Costa is regularly featured in television, radio and newspaper interviews and has published articles in both professional journals an.