When your dog is exposed to allergens, its body releases histamines. These histamines attach to your dog’s cells, which cause them to swell. This causes your dog’s excessive itching and other allergy symptoms. Antihistamines decrease this inflammation by inhibiting histamine release. Many dog owners use antihistamines to minimize their pet’s allergy symptoms.
- One of the biggest benefits to using antihistamines is cost. As over the counter drugs, antihistamines tend to be much less expensive than other prescription allergy medication.
- Often a good solution for dogs with seasonal allergies and mild allergy symptoms.
- Many dogs don’t respond to this form of treatment. For dogs suffering from extreme allergies, an antihistamine may only slightly minimize itching and inflammation.
- Antihistamines can cause slight lethargy in dogs. If your dog is on antihistamines, you’ll probably find that it is sleepier than normal.
Antihistamine drugs available on the market include diphenhydramine (Benadryl), hydroxyzine (Atarax), chlorpheniramine (Chlortrimeton) and cetirizine (Zyrtec). Check with your veterinarian to determine which type of antihistamine and dosage amount they recommend for your dog.