Outperform The Competition With A Time Released Sport Multivitamin. Giving your all in the gym or on the field can cause you to lose key vitamins through sweat. GNC Mega Men® Sport uses timed release technology to deliver a high potency multivitamin blend clinically shown to work better than a basic multivitamin and clinically proven to improve nutrient levels and feelings of mental wellbeing. Fuel Next-Level Performance And Energy. Fuel your muscles and your workout with a combination of BCAA, electrolytes, and B vitamins. Every serving of GNC Mega Men® Sport includes BCAAs as well as carnitine, which helps use fats as energy. Defend Well: Joint Health And Immune Support. If you re training hard, it’s important to help keep your joints and immune system ready for action. GNC Mega Men® Sport supports your immune health with 100%+ daily value (DV) servings of vitamin C, vitamin D, and zinc along with three ingredients to support healthy joints. Plus, you can count on over 20% improvements in key immune and oxidative stress defense nutrients.