THOUGHT: I think fortune cookies don't predict your future. CONNECTION: I had a fortune and it said you will be on top of the world. That didn't happen. That's why I think they aren't true. PREDICTION: I predict that tomorrow's wonder will be about the groundhog.
Green coffee beans extract actually only contains about 10% of caffeine per its weight, meaning that in an average 200 mg dose there is 20 mg of caffeine. This is about half the amount of a can of soda!
The more complex (and complete) answer is that the amount of caffeine in green tea varies from type to type, and green tea can contain anywhere from 12 mg of caffeine to 75 mg of caffeine, or even more for some types of Matcha Green Tea and other powdered green teas.