2,4-D poisoning: a review with illustration of two cases

2,4-D (2,4-dichlorphenoxyacetic acid) is a chlorphenoxy group pesticide. Its relative safety and broad leaf selectivity makes it a favourite herbicide of many home gardeners and agricultural workers. Severe systemic toxicity requiring hospital admission and intensive care usually occurs following intentional oral ingestion. 2,4-D poisoning is an under-recognised cause of a potentially lethal toxic syndrome, especially in low- and middle-income countries, where such compounds are widely used in farming and readily available in households. It warrants close monitoring and high-quality supportive care along with plasma alkalinisation or extracorporeal removal of the toxin. We present a short review on 2,4-D poisoning and describe two illustrative cases with significant oral ingestion resulted in early and rapidly developing systemic toxicity. Both patients were admitted to the intensive care unit; one patient was managed with alkaline diuresis and other case required three sessions of haemodialysis.