Can Benadryl Make A Dog Sleepy?

Can Benadryl Make A Dog Sleepy? One of the side effects of Benadryl is drowsiness, which helps to calm anxious dogs. The Merck Veterinary Manual states that diphenhydramine may relieve symptoms of mild-to-moderate anxiety in pets associated with travel. How much Benadryl can I give a dog to calm down? Therefore, a simple and practical