health potions? take a bottle of ibuprofen and put it in the blender with some water. if your lucky, the better health potions might have a hint of pepto bismol; unless you dont like pepto bismol, in which case its even worse. either way, a pretty rancid restorative.
mana potions taste like cheap wine... or really good wine, its all sour grapes to me. id imagine mana potions to be akin to drugs in composition, as drug labs and fantasy alchemy follow pretty similar guidelines, so theyre probably addictive...in addition to probably being alcoholic. i think maybe mana potions are more trouble than theyre worth...
...or you could always buy those online drinks for a more optimistic interpretation.