Narasin

CAS: 58331-17-2

API Pharmacopoeia: Chinese Veterinary Pharmacopoeia

Narasin is a polyether ionophore used in veterinary medicine as a coccidiostat and antibacterial feed additive, primarily for swine and poultry. It works by disrupting ion transport in parasite cells, helping prevent coccidiosis and improving feed efficiency. Produced via fermentation of Streptomyces aureofaciens, it is structurally related to salinomycin and not safe for horses.