if you have a very low or no opioid tolerance, overdosing on heroin or fentanyl is pretty easy, n extremely peaceful. i plan on going out this way. there are multiple methods of taking it, you can smoke it, snort it, or shoot it. finding a street dealer can be a bit difficult, especially if you're inexperienced with drugs, but you can also buy from a vendor on the darknet. theres a tutorial for that on here.
in terms of effects, heroin is a lot more euphoric, even if you're throwing up everything stil feels amazing, you're in complete bliss. nodding happens with both of them (and all other opioids, which is where most overdoses happen), but with fentanyl you nod quicker n harder, n a lot of people say its more of a 'sedative' feeling. when you're nodding off, you will eventually fall asleep, n if it does kill you, you wont even realize whats happening because its so peaceful. you basically just go to sleep n never wake up again.