NaturVet Brewer's Yeast & Garlic Tablets, 500 Count Veterinarian Formulated and recommended 100% Made in the USA with all natural ingredients Happy pets make happy owners, use NaturVet for all your Pets Needs Contains top quality debittered yeast that your dogs and cats love to eat. Contains 5% garlic and fortified with B-1, B-2 and Niacin. Includes Vitamin C as an antioxidant, which helps prevent flea anemia. Works as a detoxifier and immune system rebuilder.