3d image of lefetamine skeletal formula

lefetamine stimulant drug analgesic codeine d-isomer opioid withdrawal symptom methadone controlled drugs substances act neurotoxic rendering dope doping synthetic csa design nps performance-enhancing ped steroid clandestine chemistry laboratory emcdda appetite suppressant anorectic anorexic analgesia pain relief anesthetic pharmacodynamics pharmacokinetics medication side effect adverse action iatrogenic overdose contraindications interaction