Is drow poison busted/bugged?(possible spoilers)

[u/Graxemno]

It seems when you throw drow poison as a grenade, it always put an enemy to sleep, if they aren't undead or fey or have a specific resistance. The wiki however says there is a DC13 Constitution saving throw, but a saving throw never seems to trigger.

I cheesed the whole inquisitor fight on honour mode with it. Just give him a lil nap, kill his goons and keep up the poison to make him sleep again and again.

[u/Deriveit789]

TIL you can throw poisons