hi. i don't take caffeine pills, but I -love- coffee. Home brewed, home made cold brew (you should try it..), stuff from coffee shops, even the bottled Frappuccinno and double shot stuff. So...

I probably get about 6+/- full cups of coffee per day, and I do better with the coffee than without it, honestly. The other day, I had the place to myself and I just kept drinking cup after (delicious...) cup, and I ended up vomiting. Ugh. That'll teach me, lol.

To be fair, though, my "Bipolar I" leans more towards lethargy and fatigue. W/o psych drugs, I get all sortsa agitation and mixed action, but with an "atypical" (Abilify) and a mood drug (lamictal), most of that's taken care of, leaving the tired, downward stuff, plus...even though I"m thankful for Abilify, and its -far- less sedating than many other options, I do think I drink a good bit of coffee in part to "perk up" from the psych drugs.

Coffee has all kinds of potentially good for you stuff in it, so my personal, not at all expert advice would be to get your caffeine from coffee and other whole foods, not pills or energy drinks.

hope this helps.