BRAVECTO Spot-On Solution (fluralaner) is a topical medicine used to treat and prevent flea, tick and ear mite infestation in cats. Reduces flea allergy dermatitis, an allergic reaction caused by fleas. Reduces the risk of tapeworm infection by killing fleas before they can reproduce. Bravecto is effective for 12 weeks. Contains fluralaner, a member of the isoxazoline class.