Caffeine - Wikipedia Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)
Caffeine content for coffee, tea, soda and more - Mayo Clinic Experts say up to 400 milligrams (mg) of caffeine a day may be safe for most adults But if you get headaches or are restless or nervous after having caffeine, you may want to rethink how much caffeine is right for you
What Is Caffeine, and Is It Good or Bad for Health? Caffeine is a natural stimulant most commonly found in tea, coffee, and cacao plants It works by stimulating the brain and central nervous system, helping you stay alert and prevent the
CAFFEINE - Uses, Side Effects, and More - WebMD Caffeine is a natural chemical with stimulant effects It is found in coffee, tea, cola, cocoa, guarana, yerba mate, and over 60 other products Caffeine works by stimulating the central
Caffeine | Stimulant, Health Benefits, Addiction | Britannica Learn about caffeine's effects on the human body Caffeine has a stimulating effect on the central nervous system, heart, blood vessels, and kidneys It also acts as a mild diuretic Caffeine’s potent stimulatory action makes it a valuable antidote to respiratory depression induced by drug overdose (e g , from morphine or barbiturates)
Caffeine - The Nutrition Source Read on to learn more about sources of caffeine, and a review of the research on this stimulant and health The chemical name for the bitter white powder known as caffeine is 1,3,7 trimethylxanthine Caffeine is absorbed within about 45 minutes after consuming, and peaks in the blood anywhere from 15 minutes to 2 hours [2]
Caffeine: Benefits, risks, and effects - Medical News Today What does caffeine do to your body? Caffeine is a stimulant and the most commonly used drug in the world Benefits can include increased alertness, energy, and concentration However, it can
Caffeine - StatPearls - NCBI Bookshelf Caffeine is a naturally occurring central nervous system stimulant belonging to the methylxanthine class and is widely recognized as the most utilized psychoactive stimulant worldwide
Caffeine - MedlinePlus What is caffeine? Caffeine is a bitter substance that occurs naturally in more than 60 plants including: Coffee beans; Tea leaves; Kola nuts, which are used to flavor soft drink colas; Cacao pods, which are used to make chocolate products; There is also synthetic (man-made) caffeine, which is added to some medicines, foods, and drinks