Sutiable for hyperactive or nervous dogs Tablet can be given whole or crushed over food Formulated with natural ingredients for dogs over 20kg VetIQ Serene-UM Xtra is especially formulated for dogs over 20kg and is formulated with natural ingredients for hyperactive or nervous dogs. It has been recommended by Veterinarians to ensure your pet remains calm during periods of stress and anxiety, without having a sedative effect. VetIQ Serene-UM Xtra is a tasty tablet which can be given whole or crushed over food. Starts working 6-8 hours but for maximum effect allow 24-36 hours. Sutiable for hyperactive or nervous dogs Tablet can be given whole or crushed over food Formulated with natural ingredients for dogs over 20kg VetIQ Serene-UM Xtra is especially formulated for dogs over 20kg and is formulated with natural ingredients for hyperactive or nervous dogs. It has been recommended by Veterinarians to ensure your pet remains calm during periods of stress and anxiety, without having a sedative effect. VetIQ Serene-UM Xtra is a tasty tablet which can be given whole or crushed over food. Starts working 6-8 hours but for maximum effect allow 24-36 hours.