Hill's PRESCRIPTION DIET y/d Cat Food is a complete dietetic pet food for reduction of iodine levels in feed in cases of hyperthyroidism in adult cats. This food contains a restricted level of iodine.
Clinically proven to help reduce skin & gastrointestinal signs caused by adverse food reactions. How it helps: Hill's Prescription DietTM z/dTM Feline is specially formulated to reduce skin and digestive signs caused by food allergies.