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Can you use human antihistamines on dogs?

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Antihistamines are usually safe but can make some dogs drowsy and others hyperactive. OTC antihistamine preparations may contain other ingredients such as decongestants that are not safe for dogs.


Which human antihistamine is best for dogs?

Benadryl, or diphenhydramine, is an antihistamine that helps relieve the symptoms of allergies in both humans and animals. It can also be used to relieve the symptoms of motion sickness if a dog needs to be transported long distances. For most dogs, the appropriate dosage of Benadryl is perfectly safe.

How much human antihistamine can I give my dog?

The average dog would get 1/4mg per pound; for example, a 16lb dog would get a single 4 mg tablet twice daily. This is one of the few prescription-only antihistamines used in veterinary medicine. Dosing is very similar to Benedryl at 1mg per pound body weight 2-3 times daily.

What human allergy medicine is safe for dogs?

Benadryl (diphenhydramine) is the most popular antihistamine for humans and can be effective for dogs as well. Just be aware that Benadryl has sedative properties, so your dog could get very drowsy. Other safe antihistamines for dogs include Claritin (loratadine) and Zyrtec (cetirizine).

Can you buy over the counter antihistamines for dogs?

Antihistamines. Many dogs respond well to human over-the-counter allergy medicine that you can purchase at most drug stores. The most common antihistamine for dogs is diphenhydramine, brand name Benadryl.

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