Sedatives for dogs are often given by veterinarians to help calm dogs down during stressful situations such as thunderstorms, fireworks or travel. Some common synonyms for sedative for dogs include tranquilizers, anxiolytics and calming agents. Tranquilizers are used to relieve anxiety and tension in dogs while anxiolytics are designed to reduce anxiety without causing sedation. Calming agents, on the other hand, are often natural remedies or supplements that contain ingredients like valerian root, chamomile or melatonin, which have a calming effect on dogs. Whatever the synonym used, it is important to consult a veterinarian before administering any medication to your furry friend.