Caffeine is a bitter white crystalline that is a stimulant drug and a mild diuretic. It is completely absorbed within 45 minutes and typically has a half-life of 3-4 hours in the body. When used, caffeine lessens drowsiness, increases focus, and boosts athletic performance in many sports.
Note that there are many other product categories here that usually contain caffeine: Nitric Oxide
powders and Fat Burners with Stimulants
Caffeine is used by 90% of North Americans, including your friends here at PricePlow