Purina Pro Plan Veterinary Diets HA Hydrolyzed is a prescription wet dog food sold as 24 x 337g cans and formulated for adult dogs with food allergies, food intolerance and related conditions. It's designed for use under veterinary supervision as part of managing diagnosed food sensitivities.

The formula uses hydrolysed proteins — proteins that have been broken down into fragments small enough that they're less likely to trigger an allergic immune response. This approach allows dogs with genuine food allergies to receive balanced nutrition without the symptoms that conventional protein sources would provoke. Food sensitivities in dogs typically present as gastrointestinal upset, intense itching or skin issues, and hydrolysed-protein diets are considered a gold-standard approach to both diagnosis (elimination trials) and long-term management.

Hydrolysed diets are a significant investment but they're often the only solution for dogs with confirmed food allergies. The wet format of this Pro Plan product is particularly useful because wet food is less prone to cross-contamination during manufacturing, which matters when a dog can't tolerate even trace amounts of common proteins.