Royal Canin Gastrointestinal High Fibre is a dry dog food for dogs with chronic constipation, fibre-responsive diarrhoea or anal gland issues. The high mixed-fibre content normalises stool quality and supports the hindgut, often resolving issues that haven't responded to standard sensitive-stomach diets.

A blend of soluble and insoluble fibres helps form firm, well-shaped stools that exit cleanly — important for dogs whose anal glands rely on stool pressure to empty naturally. Prebiotics feed beneficial gut bacteria, while highly digestible protein and carbohydrate sources reduce digestive workload. Suitable as a long-term diet for dogs with chronic colonic disorders or fibre-responsive conditions. Veterinary authorisation required.

Vets prescribe Gastrointestinal High Fibre when dogs need anal-gland-friendly stool formation or when chronic constipation hasn't resolved on other approaches. Owners often see firmer, more regular stools within days, ending years of clean-up or trips to the vet for gland expression.