The authors’ experience in the biomedical treatment of patients with severe complications following ingestion of acid is presented. Two of the cases discussed are adult suicide attempts; once case is that of a 5-yr-old accidental ingestion of sulphuric acid. Damage to the gastrointestinal tract is different in nature & site from that of alkali poisoning, which is more common. Acidic poisoning carries a high morbidity due to both early & late complications. 9 ref. (NBB)