And a drug is a drug (to get closer to the topic). It acts on the body chemicals and may (will) induce changes that could be good or bad.

Indeed, both things most of the time; all drugs can have some side effects, but it's a thing of risks vs rewards.

And a drug is a drug (to get closer to the topic). It acts on the body chemicals and may (will) induce changes that could be good or bad.

Yeah, it's that, basically! It's odd that a technically liquid substance can dry something, but it does explain why eating something that is very sweet often makes us thirsty; it's the same principle.