title: Ecstasy and ritonavir.
mesh_terms: D015104:3,4-Methylenedioxyamphetamine / Q000009:adverse effects* / Q000031:analogs & derivatives; D000701:Analgesics, Opioid / Q000009:adverse effects; D004347:Drug Interactions; D017320:HIV Protease Inhibitors / Q000009:adverse effects; D006213:Hallucinogens; D006801:Humans; D008297:Male; D008691:Methadone / Q000009:adverse effects; D019438:Ritonavir / Q000009:adverse effects
chemical_list: D000701:Analgesics, Opioid; D017320:HIV Protease Inhibitors; D006213:Hallucinogens; D015104:3,4-Methylenedioxyamphetamine; C051800:3,4-methylenedioxyethamphetamine; D019438:Ritonavir; D008691:Methadone