Caffeine is a natural ingre.nt found in coffee beans, tea leaves, cocoa beans, guarana and yerba mate. It is added to some carbonated drinks and cold and headache medications..Stu.s have shown that drinking three to four cups of caffeinated coffee a day is linked to a lower risk of developing stroke and coronary artery disease, says Susanna C. Larsson, PhD,ociate professor in the Ins.ute of Environmental Medicine at the Karolinska Ins.ute in Stockholm, Sweden..Caffeine Content of Coffee. A variety of factors can determine the caffeine content in our favorite beverages. It is a fact that different varieties of coffee beans contain different levels of caffeine..Caffeine is the most widely consumed psychoactive drug in the world.It is insidiously addictive. Chemi.y it is ,, trimethylxanthine. Surprisingly, it wasn’t even discovered until about AD..
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 psychoactive substances, it is legal and unregulated in nearly all parts of the world..Coffee is the biggesttary source of caffeine. You can expect to get around mg of caffeine from an average cup of coffee. However, this amount varies between different coffee drinks, and can range from almost zero to over mg. This is a de.ed guide to the caffeine content of different .