Jym® prejym® - rainbow sherbet: high-performance pre-workout i've taken the decades i've spent in school, the lab, the gym, and the kitchen and distilled them into the very product you hold in your hands. I formulated every jym supplement science product to include the same ingredients at the exact amount i use to reap maximum performance and physique benefits. It's my hope that you, too, will experience similar results. -jim stoppani, phd owner - jym supplement science prejym contains: 6 g bcaas, 6 g citrulline malate, 2 grams beta-alanine and 1. 5 grams betaine per serving 300 mg of caffeine per serving 30 servings per container. Jym pre pre-workout - rainbow sherbet (30 servings)