Joint Supplements in Horses: Evidence and Welfare Considerations

This guide examines the evidence base for joint supplements in horses and their role in welfare-centred management of joint disease.

Key Facts

Joint supplements including glucosamine, chondroitin, and omega-3s are widely used
Evidence for clinical efficacy varies significantly between products and studies
Quality control and bioavailability vary greatly between commercial products
Supplements may be most beneficial in early or mild joint disease
They cannot replace appropriate veterinary diagnosis and treatment of joint pain
Omega-3 fatty acids have the strongest evidence base among commonly used supplements

Welfare Considerations and Management

Welfare-centred use of joint supplements requires realistic expectations based on the available evidence. Omega-3 fatty acids (from linseed or fish sources) have reasonable evidence for anti-inflammatory effects. Glucosamine and chondroitin have mixed evidence with some positive studies. Supplements should complement, not replace, veterinary assessment and appropriate pain management. Horses with significant joint pain require veterinary diagnosis (radiography, intra-articular treatment) rather than supplements alone.

What You Can Do

Have horses with suspected joint pain assessed by a vet before relying on supplements
Choose products from reputable manufacturers with quality control standards
Maintain realistic expectations — supplements are adjuncts not cures
Combine supplements with appropriate exercise, weight management, and veterinary care