Your genes determine if you are a ‘fast’ caffeine metabolizer who can drink cups of coffee per day without a problem or a ‘slow’ caffeine metabolizer who can’t .Caffeine is a drug or chemical found in plants. It can be harmful for both humans and animals if a large amount is consumed. If a person ate grams of caffeine .Caffeine is a central nervous system CNS stimulant of the methylxanthine cl It is the world’s most widely consumed psychoactive drug. Unlike many other .Coffee is a brewed drink prepared from roasted coffee beans, which are the seeds of berries from the Coffea plant. The genus Coffea is native to tropical Africa .
One sof espresso is generally about ml . oz , and contains about mg of caffeine . A double sof espresso therefore contains roughly mg of caffeine. Espresso Based Drinks. Many popular coffee drinks are made from espresso s.s mixed with varying types and amounts of milk..In general, you should aim to keep your caffeine intake to less than milligrams a day the amount in about two cups of regular coffee. Caffeine in Coffee..