Zylkène contains a natural product, derived from casein, a protein in milk and has been known to promote the relaxation after breastfeeding in newborns. It is a product that can help support cats in situations where they find they need to adapt their behavior to cope. These include kennel and cattery stays, house moves, arrival of a new pet or baby, sudden noises e.g. fireworks, travel, vet or groomer visits and Christmas festivities. Many cats do not cope well in a multi-cat household. Zylkène is palatable and easy to give; simply mix with food or give as a treat. Give just once a day and it is recommended that it is started several days before the stressful event is to occur. Zylkène is preservative and lactose free.