Royal Canin Hypoallergenic Small Dog dry food is a complete dietary food for dogs. Developed to reduce intolerance to ingredients and nutrients. Hydrolyzed protein sources and selected carbohydrate sources. A veterinarian should be consulted before use and before extending the period of use. Use Hypoallergenic Small Dog dry food for 3 to 8 weeks: if signs of intolerance disappear, this food can initially be used for up to one year.