Optimum Nutrition Gold Standard Pre-Workout Energy Shot Cola 12 X 60mlGold Standard Pre workout Energy Shot* from Optimum Nutrition, a convenient pre workout ready to drink shot that increases your focus and energy** ON sports drink with 175 mg of caffeine to help sharpen your alertness and focus**, plus 1. 5 g of beta alanine (non essential amino acid) per bottle Each serving of this energy booster drink contains sage leaf and nettle root extracts, and 250 mg of PerforMelon Boost, a concentrated source of the