Fenvalerate

CAS: 51630-58-1

API Pharmacopoeia: Chinese Veterinary Pharmacopoeia

Fenvalerate is a synthetic pyrethroid insecticide and ectoparasiticide used in veterinary medicine to control external parasites such as ticks, flies, lice, mites, and fleas in livestock including cattle, sheep, pigs, poultry, and dogs. It acts by disrupting sodium channel function in nerve membranes, causing paralysis and death in parasites. Fenvalerate is typically applied topically as a spray or dip and is valued for its broad-spectrum contact activity and low systemic absorption. However, it must be used with caution, especially around cats, due to potential toxicity.