<prompt> Gastric lavage is contraindicated in all the following poisonings exceptPhenolKeroseneNitric acidSulphuric acid  <response>: Contraindications of Gastric Lavage: - The only absolute contraindication is corrosive poisoning except carbolic acid, owing to the danger of perforation. Gastric lavage can be done with proper precautions. Convulsant poisons Comatose patients Volatile poisons, which may be inhaled. Oesophageal varices. In patients with marked hypothermia, and haemorrhagic diathesis Ref:- Essentials of Forensic medicine Dr KS narayana Reddy 33th Edition; Pg num:- 516 