GNC Women's Multivitamin - Energy & Metabolism: Clinically Studied Multivitamin Energy, calorie burning, and antioxidants. More antioxidant power than ever and over 30 clinically studied ingredients in every formula - all in smaller, easier-to-swallow pills. Contains 100 mg of caffeine per serving. Women's Health: Contains a clinically studied women's multivitamin formula shown to work better than a basic multivitamin.^ Helps to support bone health.* Energy: Shown to improve levels of key B vitamins^ essential for energy production.* Calorie Burning: Features a combination of thermogenic ingredients ingredients that may support calorie burning and mental sharpness.* Antioxidants: Packed with antioxidants to help fight free radicals that can be produced by intense exercise.* ^In a randomized double-blinded, placebo-controlled study of 112 healthy volunteers subjects, taking the GNC vitamin and mineral blend for 6 weeks experienced significant improvements in serum levels of certain key nutrients 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, biotin, 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 Score were also overserved compared to placebo. ^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 nutrients compared to a placebo and a basic multivitamin formula based upon multivariate statistical analyses of a group of B vitamins (thiamin, niacin, riboflavin, pantothenic acid, biotin, folic acid and vitamins B-6 and B-12) and key antioxidants and carotenoids (a group of beta-carotene, alpha-tocopherol, selenium, lutei