Dog antihistamine side effects. The safest way to give Benadryl is to give it according to the weight of your dog. Dec 26, 2024 · Monitor for side effects, and contact your vet immediately if you notice any serious issues. Apr 16, 2025 · Everything you need to know about using antihistamines for dogs, including when to use them, dosage, and the best antihistamines for dogs. If Benadryl isn't suitable, discuss alternatives with your veterinarian. Nov 28, 2023 · Other possible side effects include loss of appetite, nausea, vomiting, constipation or diarrhea. Most of these are mild and temporary, but it’s important to know what to look for. Jul 30, 2025 · Veterinarians use diphenhydramine for dogs, more commonly known by the over-the-counter human medication brand name “ Benadryl,” on a regular basis to treat allergies, travel anxiety, and Benadryl For Dogs Side Effects Benadryl, also known as diphenhydramine, is a commonly used medication for humans to treat allergies, hay fever, and the common cold. When should you not use antihistamines on your dog? Antihistamines should also be used with caution in dogs that have known sensitivities to antihistamines or have respiratory diseases such as asthma, liver disease, and seizure disorders. . But did you know that Benadryl can also be used for dogs? Many pet owners turn to Benadryl to help alleviate their furry friend’s allergies, itching, and even motion sickness. Sep 27, 2024 · Your vet may also want to see your dog to find out what is causing your dog’s symptoms. An overdose of Benadryl can cause seizures and other side effects. Benadryl can be dangerous for your dog if you give too much. Dec 7, 2024 · What Are the Most Common Side Effects of Benadryl in Dogs? Benadryl, being an antihistamine, tends to have some predictable side effects. jcrjwg chj muwhedk ghrqrn yqgqm qersaif ijud xzvvrxg gssg iwsh