No. But not enough gives me a headache.
Like Mountain Man can cause headache if I don’t get some in the mo
I have never had too much caffeine, so I can't answer that. Now a lot of those energy drinks that have a lot of caffeine also have a lot of sugar. The sugar in those can upset my stomach.
Nope, if it wasn't for caffeine I would probably fail all my classes.
Too much caffeine gives acidity problems.