The 2nd and minimal metabolic pathway is made up of the reaction of cyanide with cystine to yield cysteine and ?-thiocyanoalanine (Wooden and Cooley 1955).An antidotal blend of inhaled amyl nitrate and intravenous sodium nitrite and sodium thiosulfate in many cases are indicated. The IPCS/CEC (1993) evaluation of antidotes for cyanide poisoning men