Paraquat.

Abstract

Estimated lethal dose is 10 to 15 ml of the concentrate. The minimum lethal dose is estimated to 30-35 mg per kg body weight [1, 3]. Ingestion of 20-40 mg of paraquat ion per kg body weight results in death in most cases but the death may be delayed for 2 to 3 weeks. Ingestion of less than 20 mg paraquat ion per kg body weight is reported to give no or just gastrointestinal symptoms followed by recovery [1]. The mean lethal dose, based on the values from several handbooks, was 2.5 g [4].