Pro Plan Veterinary Diets HA Hydrolyzed is a prescription dry dog food for adult dogs with diagnosed or suspected food allergies and gastrointestinal sensitivities. Suitable for all breeds, it's prescribed and monitored by a veterinarian — either for elimination diet trials or long-term dietary management.

The formula centres on a single hydrolysed protein source, where proteins are broken down to a molecular size the immune system is unlikely to recognise and react to. A single low-allergen carbohydrate completes the picture, keeping the ingredient list deliberately minimal. High digestibility ensures dogs absorb essential nutrients even when the gut is compromised, and the formulation meets all adult maintenance requirements without additional supplementation.

Owners reach for HA when conventional diets haven't resolved chronic itching, recurring ear infections, or loose stools. The hydrolysed, limited-ingredient approach removes the guesswork from elimination trials, and working within a veterinary prescription means progress can be tracked systematically.