Now that you know how much caffeine is in Diet Coke, the biggest question becomes does caffeine have a positive effect on the taste? The answer seems to be yes. We ranked Diet Coke third in a list ...

After 40 minutes, the body has absorbed all of the caffeine from the Coke, which causes pupils to dilate and an increase in blood pressure. The drink by now will have also "blocked the adenosine ...

You probably never think of coffee, tea, and energy drinks like Red Bull or even Coca-Cola as drugs ... some people naturally have a higher tolerance to caffeine than others.

Matcha's caffeine content can depend on its age and quality — it may have up to 130 mg per serving ... likely won't cause harm in moderation. How does matcha's caffeine content compare to ...