caffeine per gram of loose tea as compared to per gram of ground coffee, but a cup of tea uses far less “material” than a cup of coffee. A cup of green tea. I .Find out how much caffeine is in coffee, tea, chocolate, For more information on caffeine levels in green tea, read How Much Caffeine is in Green Tea..Green tea and coffee both contain caffeine but coffee has more caffeine compared to green tea. Approximate amount of caffeine in green tea and coffee. Green Tea Coffee .Green tea caffeine amounts as well as a comparison showing how differentnds of green tea vary by caffeine levels..
The average cup of tea contains about half as much caffeine as the average cup of instant coffee, and the average cup of instant coffee contains about half as much caffeine as a cup of proper espresso coffee..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..