GNC Mega Men Performance & Vitality Vitapak Program: With Clinically Studied Multivitamin Blend^ Achieve your daily nutritional goals with customized ingredients plus a multivitamin with more than 30 clinically studied ingredients. Men's Health: Contains a clinically studied multivitamin shown to work better than the basic multivitamin^ Antioxidants: Packed with antioxidants for cell protection and immune support.* Circulation: Features resVida, which is clinically shown to significantly enhance blood vessel dilation.♦ Also has ingredients to help maintain blood vessel tone.* Prostate & Sexual Health: Includes lycopene and saw palmetto to support health. * Also has L-arginine, which plays a key role in sexual health. * Overall Health & Wellness: Helps support joint and cardiovascular health as well as cholesterol levels that are already in the normal range.* ^In a randomized, double-blinded, placebo- controlled study of 112 healthy volunteers, subjects taking the GNC vitamin and minerals blend for six weeks experienced significant improvements in serum levels of certain key ingredients compared to placebo and a basic multivitamin formula based upon multivariate statistical analyses of a group B vitamins (thiamin, niacin, riboflavin, pantothenic acid, biotin folic acid, and vitamin b-6 and b-12) and key antioxidants and carotenoids (a group of beta-carotene, alpha-tocopherol, selenium, lutein and lycopene). Statistical improvements in SF-36 Vitality and Mental Health scores were observed and also observed compared to placebo. ♦In a randomized, double-blind, placebo-controlled crossover study, 19 volunteers consumed 3 does of resVida (30 mg, 90 mg, 270 mg) and a placebo at weekly intervals. Flow-mediated dilation (FMD) of the brachial artery was measured one hour after ingestion of each treatment and was significantly increased at all 3 doses relative to placebo. 30 mg of resVida demonstrated 2.5% greater increase in FMD relative to placebo.