I have not rolled in 6 months and tried last night with tested molly. I am a Ritalin user and it did not cross my mind that it would cause the molly not to work. I dosed a generous amount and within an hour I experienced blurred vision and other MDMA effects without the rolling part. A little research online suggested that the Ritalin was blocking the pathways that the MDMA needed to do its thing. Ok so lesson learned and no big deal. I used a strong indica with a .5 Xanax to put me to sleep when I realized nothing fun was going to happen. I also pre and post loaded with the supplements from the ecstasy users bible allowing me to wake up feeling fine. My question to Ritalin users is am I ok to try to roll tonight? I did not take any Ritalin today. Is that enough time for my body to clear the Ritalin and open up those need pathways for a roll tonight. Thanks.