<prompt> Fatal dose of KCN is -50-60 mg120-130 mg180-190 mg280-300 mg  <response>: poison fatal dose Cyanide salt : 200 to 300 mg Carbolic acid Phenol : 20 ml Castor : 5 to 10 seeds Copper sulfate : 30 gm Cocaine : 1 to 2 gm Heroin : 50 mg Opium : 500 mg Morphine : 200 mg Phosphorus : 60 to 120 mg 