Parasiticides

Equine parasite management integrates pharmacological and non-pharmacological strategies to control endoparasites and ectoparasites, safeguard horse health, and minimize environmental impact. Parasite populations form part of the equine gastrointestinal ecosystem, but imbalance can lead to significant disease and welfare concerns. Antiparasitic drugs – including benzimidazoles, tetrahydropyrimidines, macrocyclic lactones, and pyrazinoisoquinolines – remain the cornerstone of treatment and prevention; however, resistance is widespread and poses major challenges. Ectoparasite control relies on a few approved products, often requiring off-label use combined with environmental interventions. Sustainable parasite control emphasizes diagnostics, risk-based approaches, targeted therapy, and integration of stock and environmental management, including appropriate stocking density, strategic deworming, manure management, and pasture rotation. Fecal egg counts, serological tests, and monitoring inform individualized treatment decisions. Environmental stewardship is critical, as antiparasitic residues can impact biodiversity and soil health. Continued research, surveillance, and adaptation of existing protocols are essential to preserve drug effectiveness and ensure equine health and welfare.