Only option for me at my workplace is either coffee (undrinkably bitter) or expired tea (tastes like rot). Did not have enough time yesterday to make myself tea for the next day and the shop where I buy energy drinks is closed. I extremely drownsy and my head hurts.
EDIT: Coffee is undrinkable to me, quality or not. The bitterness will just overpower everything.
I’m backing this one, but if you can rule out a medical angle then I want to mention yerba mate. Brew with a little honey, add ice, and it’s basically coffee-strength Arizona Ice Tea for less than half the price