Composition C-4 is the most common plastic explosive employed by the military in Vietnam. Ingestion is followed in a few hours by multiple generalized seizures, hematuria, severe nausea and vomiting, muscle twitching, and mentation changes. Six patients requiring hospitalization were treated by gastric lavage, maintenance of airway, control of seizures, monitoring of urine volume, and maintenance of fluid and electrolyte balance. No fatalities were observed.
Stone WJ, Paletta TL, Heiman EM, Bruce JI, Knepshield JH. Toxic Effects Following Ingestion of C-4 Plastic Explosive. Arch Intern Med. 1969;124(6):726-730. doi:10.1001/archinte.1969.00300220078015