Revival Animal Health Breeders' Edge Foster Care Canine - Powdered Milk Replacer for Puppies & Dogs Compare to Esbilac milk replacer Gives your puppies complete and balanced nutrition for the first 35 days of their life Bio-Mos promotes a healthy GI tract to support the animal's natural defenses IgY boosts the immune system to protect against disease Also helpful for pregnant, lactating, or convalescing adult dogs as a nutritional supplement