What is Ivermectin?
Ivermectin is a mixture of 22,23-dihydroavermectin B1a (≥80%) and B1b (≤20%) — semi-synthetic macrocyclic lactones with broad-spectrum antiparasitic activity. The compound is poorly absorbed by mammalian cells due to P-glycoprotein efflux at the blood-brain barrier, providing the selectivity that underpins its safety profile.