Maxiraw's Primary Caffeine brings you one of the most researched & effective sports nutrition ingredients, ideal for supporting all serious training goals. Each Primary Caffeine tablet delivers a 50mg hit of pure caffeine, & when having two capsules is great for enhancing your workout focus & drive. Primary Caffeine has been formulated to help you enhance your workout intensity with serious mental focus & enhanced concentration. Caffeine is proven to work & is one of the most researched & widely taken ergogenic aids.