Other subjects explored include hydrogen bonding effects on the photochemistry of chromophores in solution, photochemical generation of silicon-centered radicals and their reactions, and photochemical processes at the air-water interface of atmospheric droplets.
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class of psychoactive drugs. It is the world's most widely consumed psychoactive drug, but unlike many other psychoactive substances, it is legal and unregulated in nearly all parts of the world.
Caffeine is a psychoactive drug that stimulates the release of certain hormones in the brain (1). This is why coffee gives us an energy âkickâ. Caffeine also gives a âkickâ to our blood pressure, and is actually a well-documented pressor (substance that elevates blood pressure).