Emergen-C® old school! Our original formula and still our best seller, featuring 24 nutrients, including 1,000 mg of immune supporting vitamin C,* 7 B vitamins to enhance energy naturally* (no caffeine, no crash), electrolytes to refuel and replenish post-workout,* and more! Don't like lemon? Don't like lime? Try lemon-lime. It just might do the trick.