My doctor prescribed me Opana er 20mg. I have a weak stomach and decided I was going to snort them. I heard snorting them has more of an effect than taking them orally. Should i snort an entire pill? I'm 6' 2" and i weigh 210 lbs. This is the first painkiller I've ever taken. I would like to take them as quickly as possible. Please give me any advice you can.