In my experience, the measurements would have to be very accurate for the poison not to take effect.

[ Oh, but he hopes he isn't making her think that he's some sort of potions expert. He lets out a soft laugh, thinking of his own caretaker who's been by his side for so long. ]

It is often that we harvest herbs and plants to mix together when travelling. Should we run out of our own medicine, and there are no shops nearby, then we make our own.