One of the top feed balancer brands in the UK is TopSpec. Numerous TopSpec products help horses and ponies with their difficulties. When the protein levels in the grass/haylage are high, their TopSpec Performance Lite Feed Balancer is becoming the go-to product for hard-working good-doers and for many more horses that are in good condition.
Based on research done at the TopSpec Equine Research Centre, their own, custom-built applied nutrition research facility in North Yorkshire, they test, modify, and improve their compositions.