I drink one cup a few times a week when my fatigue is bad but mostly avoid it as a general rule. I've been getting s'mores frappuchinos lately because they are delicious but I fall asleep right after drinking it so doubt it's doing much. I avoid it due to my anxiety and I think it makes my stomach hurt more sometimes. I've never been told to avoid it and while working I doubt I could have without falling asleep at my desk.