Nature's Best Hardcore Pak is packed with anabolic nutrients like OKG and Vandyl Sulfate Plus. Plus chromium polynicotinate, 1000 IUs of anti-oxidant vitamin E, timed release B-complex vitamins, Super Mins and an extra high potency of protective vitamin C for those extra tough workouts. For the human body to perform at its maximum potential, it must be fed a vast and complex array of vital nutrients. Becoming deficient in just one of these essential vitamins or minerals breaks down the metabolic pathway that produces optimum efficiency and performance declines. Not good! Help ensure the presence of essential cofactors necessary for thousands of metabolic reactions with Hardcore Pak.