How to use Antihistamine in Dogs

allergy in Dogs

Just like people, sometimes dogs will also get allergies due to pesky insect bites and stings while playing or going outside. In such case, the dog owner will allow the pet to feel better as soon as possible by giving treatment like an antihistamine. Dog owner may have many questions like how do they work? Are they safe? The answer is, this is one of the most effective antihistamines for dogs and it is safe when it is suggested by your vet.

Reason for causes allergies in dogs

Many things that make the dog to get allergic, like a human most of the dog have different allergies depends on the age. Most common allergies are airborne, which means dog inhale it before showing the symptoms. Another type of allergies may also available such as bee stings and flea bites these too can also causes allergy.

Some allergies in dogs occurred due to environmental factors such as pollen, hay and grass and the symptoms will present during dog exposing them. This type of allergy is easy to treat by taking a simple blood test, your vet will find what type of allergy is that. If they found any positive sign of allergy, then they can help the dog by giving the medicine such as antihistamines.

Certain food can also cause an allergic reaction in dogs, it is difficult to find this type of allergy and it also little bit challenge to give treatment. Chronic ear infection or feet are constantly red instead of itching and sneezing, these are the symptoms of this allergy. An even blood test can also diagnose a food allergy in dogs.

Parasites and dust mites are the common way to cause allergies in dogs; the symptoms are more than the mild itching that comes with infestations. When a dog gets allergic due to fleas, then they also get allergic to saliva of the insects. So that the affected dog experience excessive itching, it makes one or two critters on their body.

The best treatment for flea allergies is giving topical treatment by using the ointments such as antihistamine that can be applied directly to the skin.

What are the Antihistamines are available for dogs?


Histamine is a chemical that formed inside the body of affected pet, this allergen will attach to the tissues mast cell in skin. The best solution to treat histamine is an antihistamine. Now there are many antihistamines are available on the market, that are safe and most of them are appropriate for your dog.

Chlorpheniramine is a mild antihistamine used to treat pet allergies and itching in dogs. chlorpheniramine is a brand name, that is available in the form of tablet, capsules, or syrup. Clemastine is another type of antihistamine known as “Tavist”, both of these antihistamines is very effective. Benadryl is another type of antihistamine; most of the pet owners suggest this in order to treat their dog’s allergy symptoms. Benadryl is very effective and it helps to stop many symptoms of the most common allergies such as swelling and excessive itching. The standard dosage for Benadryl is 1mg per pound of body weight. Dog owner can give 2-3 times per day to cure the disease.

Diphenhydramine is a powerful ingredient and the products that contain this ingredients is “Benadryl” for allergies. Other products such as Benadryl allergy plus congestion will contain active ingredient that are too harmful to your pet.

Common side effects while using Antihistamine for Dogs

Sometime feeding antihistamine, cause side effects to your pet. Some of the side effects are as follows:

  • Dry mouth.
  • Dizziness.
  • Excessive barking.
  • Excessive hunger or thirst.
  • Blurry vision.
  • Confusion.
  • Loss of appetite.
  • Increased or decreased blood pressure.
  • Diarrhea.

While feeding antihistamine, check whether, your pet has any symptoms that are mentioned above, then immediately have to consult the vet.

The way to introduce Antihistamine to your Dog

Determining an antihistamine in your dog is a little bit tricky. Many antihistamines may not work for most of the dog because sometime it appears fallaciously to work. While you giving antihistamine to your dog, be sure that if it could affects their body or not (side effects).

Start giving antihistamine to your pet if it suffers from allergies. Most of the dog owner says that it affects mostly during the spring and the summer. Ignore the medicine if you are not very sure about it; before going to give, it’s better to consult a vet. After taking this medicine, if your dog shows any improvement then we need to stop giving it to the dog temporarily. If their symptoms return, be sure that the allergies are still present at their bodies. During that time you have to continue giving the medicine to the dog.

If the current antihistamine cannot suits to your pets, speak to your vet about trying a different type of antihistamine. Suggest the treatment that is related to your dog symptoms with proper vet consultant.

Providing antihistamine is not a proper way to cure allergies, it is only a way to suppress the symptoms and make your pet comfortable during at that moment. Now there are many antihistamines are available, if your pet gets affected give the dog, an antihistamine that is related to the symptoms of the disease.

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