NaturVet – Brewer’s Dried Yeast Formula with Garlic Flavoring – Plus Vitamins – Supports Healthy Skin & Glossy Coat – Fortified with B-1, B-2, Niacin & Vitamin C – for Dogs & Cats (4 lb Powder)

Customers find this nutritional supplement effective for gut health and appreciate its ability to repel fleas and ticks, with one customer noting immediate relief from itching and biting. The product receives positive feedback for improving coat and skin, being easy to mix with food, and having a pleasant garlic and yeast flavor. While many customers consider it good value, some report digestive issues including vomiting and diarrhea.