Movantik
"Do not take this medication!!! 30 Min after i took it. I had the worst stomach cramps and pains I have ever encountered. Finally after I got everything out I started feeling withdrawal symptoms. I tried to take my Methadone dose so the withdrawal would go away but it didn't help. Im sitting here right now wondering how long this shit stays in my system and thinking about how bad I want to curse my Dr. out. I just wanted to crap not go into full withdrawal. WTF"