Well, for the Mysterious Liquid specifically, it's completely random. So it's impossible to tell what it will do. You get it when you do not successfully synthesize a chemical in the lab.
For this specifically, I mean a short text whenever you consume it, so you can tell what it's done to you. The randomness is perfectly fine, but being able to know what it's done when you take it would be a good idea in my opinion, since right now it's hard to know exactly what it can do in the first place.