Serene-UM® is the perfect, natural answer to calming hyperactive pets or those who stress easily. It is beneficial with helping your pet cope during "unsettling periods" like fireworks, thunderstorms, car journeys & family gatherings. Serene-UM® consists of a totally natural blend of amino acids & vitamins, which helps to relax your pet & thus offers you a natural alternative. Easy to give drops with no mess & no waste.