I'm was using it, but I'm also, idk. Because as far as I can tell, there's very limited resources for alchemy, so you have to really plan ahead what potions you want and when to use them. To the point, I'm now doing the exact same thing I do in every other RPG, which is hoarding them to no end and never using them because, and sing it with me now, "I might need it later". Who knows if later comes. Very real chance I beat the game with a crap tone of ingredients and potions just sitting about.