The acute intraperitoneal toxicity of cypermethrin

This study determined the effects of acute cypermethrin toxicity in the rat and its dose-response characteristics The intraperitoneal LD50 of cypermethrin from the study was 44.0 mg/kg body weight. The symptoms of toxicity were muscular weakness, swaying gait and respiratory distress; pallor and prostration occurred at higher doses and convulsions preceded death, apparently due to respiratory failure.