Rx Vitamins for Pets Nutrigest for Dogs & Cats - Helps Support Proper Bowel & Digestive Health - Veterinarian Formulated Probiotic - 90 Capsules Designed to Help Support Proper Bowel Health Delivered in powder form for the larger pet How long one bottle of 90 capsules of NutriGest for Pets (Companion Adults) will last depends on the size of your pets