Probably a stupid idea, but...?

[RecycledAtoms]

What if I OD on ZzzQuil while in the tub? What are my chances of drowning without feeling it? Is this even possible?

 

[Wreck-it-Riley]

Humans have a drowning reflex that works when you are unconscious too. You can see it most in babies. splash water on their face and their legs kick straight out and arms go tot he sides. Good chance you will lift your head out of the water if your body functions are working well. And adrenaline released when you go under should wake you from even some pretty heavy sleeping med.

If it doesnt work, sitting in a bathtub full of water can be extremely painful. Partial submersion has been used as torture before. passing out in the tub for too long could do some damage.

 

[Ritter]

zzzquil is just benadryl. It takes a lot to truly "pass out"

Alcohol does amplify the effect of it though, so with enough of both...
but really if you're willing to try that method one thing described in the final exit and pph is bag over the head with elastic band, holding open so fresh oxygen flow with your thumbs (in seated position) and after a lot of sleeping pills you will fall asleep/pass out, your hands will drop, the band will contract and oxygen flow stops... there is risks though, your unconcious SI can still be enough to tear off the bag, you might not drop both fingers etc etc

there's risks with those methods for sure