Like telling him to do retrials on the same people to see if effectiveness diminishes or to see how much you can take within a span of time to not overdose or something like that
Exactly, he doesn't even need to directly bring up diminished effectiveness either. Just ask how people fare with repeated use and ling term exposure. Those are things you have to know when making medicine and won't give away that he knows the probity it.
Wow, typing with just my middle finger really is good for making typos. I have hot cheeto fingers right now.
*long
*problem with
I mean, I can think of some very simple ways to get around this potion issue, but the plot can't have that
(￣∇￣")