I can't drink coffee when I'm flaring because the caffeine bothers me. I can't speak for tea though since I rarely drink it, but I assume it's the same thing, or maybe just change your tea blend to see if that makes a difference.

I don't drink any energy drinks. A lot of them have sugar and junk in them that I try to avoid. Plus they do make me feel gross, really sick to my stomach. I'd try to avoid them honestly because they may be the culprit in you not feeling so hot.

Is anemia causing your fatigue? That's usually what causes mine and so I'd try to get the anemia under control.

I agree with rmb that the energy drinks are a lot of sugar and other chemicals. I have never liked the taste of coffee but I drink a ton of tea. Even in my worst flare, I am still able to tolerate tea. In fact, there are times that was the only thing I could tolerate other than water and an occasional gatorade for electrolites. I usually have black tea early in the day for the caffeine and switch to decaf or green or white or red tea at night. Of course, everyone is different so you just have to keep up with what you try and what bothers you. I also agree that anemia could be the culprit for your lack of energy. If you haven't had labs done lately, that might give you some answers.