I drink this with a lemon slice sometimes on the days when the post lunch slump is particularly strong. I don't drink coffee and am very sensitive to caffeine and this seems to do the promised job of perking me up without giving me the caffeine jitters / headache. I don't know how much it has an effect on everything else regarding digestion, focus, etc. but it doesn't have any bad effects? I do like how convenient the pouch is to travel with too :)
Feedback
The powder can clump up in the water a bit and there's a bit of residue left behind if you put it in a glass / water bottle that you'll need to clean with a brush - it definitely doesn't dissolve cleanly and can leave little teeny orangey / yellow deposits in your drinkware.