Show Tech Vitalize is a 100% natural dietary supplement specifically formulated to help prevent tear stains in dogs. Recommended by vets! Recommended dose should be given daily (may be mixed with food or given separately) during the first 14 days. Thereafter reduce the dose weekly until finally stopping at 90 days. This treatment may be repeated if necessary after a recess of 90 days. Keep out of the reach of children. Also suitable for cats.