Zylkene helps restore balance and harmony in your patients' lives, naturally… with an innovative, nutritional supplement you can trust to help reduce chronic and situational stress in dogs and cats, and increase their ability to cope with change. Formulated with alpha-casozepine, this product is indicated for short-term situational stress or longer term for chronic anxiety, when appropriate to keep pets calm without drowsiness. Clinically proven for behavior problem management with minimal side effects – no sedation or tranquilizing effects. Derived from casein, a milk protein with calming properties. Lactose free and well tolerated. Safe and natural for nursing mothers and puppies, and can be given with other medications. Easy once-a-day administration.