Vibactra Contains: Olive Leaf, Mustard Seed, Pau D’arco, Black Seed, Cloves, Grape Fruit Seed Extract, Ethyl Alcohol, Filtered Water CAUTION: Do not mix Vibactra with Vibactra Plus™, UTR™, Kennel Koff™, Kocci Free™, HWF™, DO NOT USE WITH BAYTRIL OR TAMIFLU. As with any food product, herbs can antagonize allergies in your pet. Stop giving Vibactra if you see any of the following: Rashes, hives, edema (swelling), diarrhea, or blood in stools. If your pet has a reaction give charcoal and take to a veterinarian. (Have your vet treat for symptoms. May cause miscarriage in some animals.