https://www.sciencedirect.com/science/article/pii/S2405844020326633 What dosage is it lethal? "The majority of safety and pharmacokinetic data on oral administrated ivermectin are from doses of 0.15–0.20 mg/kg. This study provided histologic and hematologic information for higher doses using Corydoras fish as animal model. High doses of 0.22 and 0.86 mg/kg were not harmful to the intestinal tissues of the animal model neither affected the blood cells counting in general. The overdose of 170 mg/kg was demonstrated to affect Myosin-Vb, which can have implications in the intestinal epidermal integrity. " check my math - 150 lbs = 68 kg, meaning don't take more than 170 mg x 68 = 11,560 mg Don't eat 11.56 grams of ivermectin apple flavored horse paste (sold in 6 gram tubes) in one sitting. * I'm not a doctor, check my math and again, don't eat it all in one sitting