Tried upwards of 200mgs of methadone for several days, sometime in the middle of this past January. Had absolutely zero effect. Didnt even ease or take edge off of the withdrawal symptoms! Methadone has always worked for my withdrawal symptoms in the past which leads me to believe there is a combination of drugs mixed into the fentanyl i have been using. Along with the standard cutting agents used in this area, which are typically Mannite Cicogna and Quinine. Prior to this latest attempt i was a patient at Riverside Treatment Services, which is a methadone clinic. This was sufficient in the past at quelling my use of fentanyl. 