What antihistamines are safe with dogs?

The following antihistamines are generally considered safe for use in dogs, when used according to the directions of a veterinarian:

- Diphenhydramine (Benadryl): This is a commonly used antihistamine for dogs and is available over the counter. It can help relieve symptoms of allergies, such as itching, sneezing, and watery eyes.

- Chlorpheniramine (Chlor-Trimeton): This antihistamine is also available over the counter and can be used to treat allergies in dogs.

- Cetirizine (Zyrtec): This antihistamine is typically prescribed for dogs and can be used to treat allergies and other conditions that cause itching and inflammation.

- Loratadine (Claritin): This antihistamine is available over the counter and is commonly used to treat allergies in dogs.

- Fexofenadine (Allegra): This antihistamine is available over the counter and is commonly used to treat allergies in dogs.

Some antihistamines can cause side effects in dogs, such as drowsiness, dry mouth, and vomiting. It is important to talk to your veterinarian before giving your dog any antihistamines, as some may not be appropriate for your dog's specific health condition.