oh that's an interesting idea. that happens in real life a lot! like at one dose something is a blood thinner, and at another it's a mood regulator. so sometimes you'd want to stockpile a potion + use two or three at once instead of getting an immediate benefit..
i like this, it would make my potion hording feel like a game mechanic(even if i still end up saving the potions until its too late :P)
i wonder how you could shape discovery- maybe potion types have known 'hero's dose' uses, so once you figure out a type it's known?
yeah and maybe a short prompt to indicate a body's tolerance, trying to hit just under an OD like some kind of fiending addict lol... disco elysium probably has some good text for that