gnc gnc mega men multivitamin - twin pack gnc clinically studied multivitaminantioxidantsheartimmune supportmore antioxidant power than ever and over 30 clinically studied ingredients in every formula - all in smaller, easier-to-swallow pills.men's healthcontains a clinically studied men's multivitamin formula shown to work better than a basic multivitamin. helps support colon and prostate health.*antioxidants packed with antioxidants for cell protection and stress defense.*heart supports heart health and cardiovascular function.*immune support supports immune health with 20% more absorption of key immune and stress defense nutrients. ^in a randomized, double blind, placebo-controlled study of 112 healthy volunteers, subjects taking the gnc vitamin and mineral blends for six weeks experienced significant improvements in serum levels of certain key ingredients compared to a placebo and a leading multivitamin formula based upon multivariate statistical analysis of a group of b vitamins (thiamin, niacin, riboflavin, pantothenic acid, biotic, folic acid and vitamins 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 scored were also observed compared to placebo.