Caffeine is a natural stimulant found in coffee, tea, and various other beverages and foods. Chemically, it is a xanthine alkaloid. Caffeine works by blocking the action of adenosine, a neurotransmitter that promotes sleep and relaxation. By doing so, caffeine increases alertness and reduces the perception of fatigue. It is commonly consumed to combat drowsiness and improve mental focus. Caffeines chemistry involves its structure as a methylxanthine, with a similar molecular structure to adenine and guanine, components of DNA and RNA. Buy high quality Caffeine from Chemicea Pharmaceuticals. Chemicea Pharmaceuticals is one of the leading manufacturer and exporter of Caffeine