Renal failure and corrosive airway and gastrointestinal injury after ingestion of diluted diquat solution

A 66-year-old man ingested 200 mL of Dexol Industries Weed and Grass Killer Concentrate (Torrance, CA), which contains 1.84% diquat dibromide, a herbi cide structurally similar to paraquat. He remained asymptomatic for 8 hours , and then a sore throat and vomiting developed. Twenty hours after ingesti on, esophagitis, mucositis, epiglottitis, and acute renal failure developed , from which he slowly recovered. This is the first report of systemic diqu at toxicity from ingestion of a diluted diquat solution.