I have bought some Ultra Caffeine a long time ago and now they have "expired" (Best Before 03/2018) for over than a year. I have stored them in a cool, dry place away from light as suggested by the label.
Now I assume that they probably don't go bad or something but is there some data on their effect decreasing over time? Should I take 3 instead of 2 now to have the same effect? Just curious.
Thank you for any answers!