What is a good energy drink?

Amorina
So, I'm a first year at university and I need to find ways other than coffee to get caffeine because when I drink too much coffee, it makes me sick. I'm getting to the point of in the term where I run on caffeine, though. Tea doesn't tend to have enough to keep me going. I tried 5 Hour Energy but it is gross-tasting. So isRedBull.

What is an energy drink that doesn't taste like vomit and doesn't have a large amount of calories?
What is a good energy drink?
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