Man i dont mess with any of those......I had a hernia when i was in the Marines, and when the Navy did the operation they sewed a nerve under the patch...So i was in chronic pain all the time.....they gave me 45 percocet a week to deal with the pain. And they kept me on it for almost 7 months. My roomate and I were snorting them and eating them like crazy. We would mix 2 percocet with an Ambien crush them up, and snort it. It was real bad.....and i was hooked. I would have night terrors, where i would wake up but the dream was still going on in real life....it was nuts. My health declined, i got real irritable all the time, and had to go to anger management. Finally one day i stopped getting my prescription filled, and had my doc stop writing it. And for about 3 weeks i went through some pretty bad withdraws.....My legs would cramp up in the middle of the night, my heart would start racing for no reason, i would get real bad night sweats and hot flashes, i was trying to fu*k shit up all the time, and broke 2 cell phones, a mirror, and threw chairs off the third deck on a daily basis. It was bad, and now that i have been clean for about 8 months, i will never do them again. they are pretty much just synthetic heroin.