I've had easy access both of those through the years family members take them in my household. I used to visit Texas cross over to Mexico for a day trip and picked up tramadol, clonazepan by the boat load with no prescription TSA never made fuzz about it. I mixed the two in high quantities didn't have any affect other than feeling high kinda like taking Xanax, and promethazine at the same time. I always woke up never felt like I could die. I'm sure if take enough of the cocktail and mix a little liquor it can get the job done.