Optimum Nutrition Gold Standard Pre-Workout Advanced powder supports energy* and focus* to help you reach the pinnacle of your workout ON advanced pre-workout contains 8x more L-Citrulline and 2x more Beta-Alanine per serving compared with the original Gold Standard pre-workout powder This food supplement provides 200 mg of caffeine from natural sources to increase alertness and improve concentration before a workout** Gold Standard Advanced preworkout with Vitamins B6, B12, niacin and pantothenic acid contributes to normal energy-yielding metabolism* This energy powder is a great addition to your pre-workout routine and comes in 4 flavours: tropical, sour gummy, fruit punch, blue raspberry For a tasty, smooth shake, mix 3 scoops in 400 ml cold water; for optimum results, use once a day, 15 to 30 minutes before training *Source E Source COMMISSION REGULATION (EU) No 432/2012; ** Source EFSA Journal 2011;9(4):2054 24 Optimum Nutrition, Unit 3, Romaldkirk Road, Riverside Park, Middlesborough, TS2 1XA, GB.