Over the Counter Antihistamine for Dogs

Choosing an antihistamine for dogs is not as difficult as it may seem. There are some over-the-counter antihistamines available for use; however, as with administering any medications to an animal, reading and understanding the directions and warnings are important.

Treating Allergies

There are number of factors that can trigger allergies in dogs. Plant pollen, diet, household dust and lawn chemicals can all cause allergies ranging from mild to severe. There are a number of steps that a dog owner can take to kelp alleviate allergies.

  • Keeping areas clean of allergy triggers by frequent vacuuming
  • Applying supplements that keep the skin and coat healthy if fleas are the cause of the allergic reaction
  • Using air purifiers
  • Baths using skin-soothing medicated or herbal shampoos with jojoba, aloe, eucalyptus or oatmeal if the skin is irritated
  • Using over-the-counter antihistamines, such as Atarax or Benadryl, with approval from a veterinarian

It is important to consult with a veterinarian before administering any medications, especially if the dog is already taking other medications or has other medical conditions. Drugs can interact with other medications, producing adverse side effects that can be serious. Some drugs can also worsen a medical condition.

Dog Antihistamine

Benadryl or diphenhydramine is the most used dog antihistamine available. Dosages are approximately 2 mg per pound of the dog’s weight orally every eight hours. For example, if a dog weighs 20 pounds, then 2 mg times 20 pounds equals 40 mg. Do not use Benadryl if the dog is pregnant or nursing. Do not use the drug if the dog has glaucoma, urinary obstructions, heart disease or intestinal obstructions. Do not use if the dog is allergic to any other antihistamines.

Side effects include:

  • sleepiness
  • weakness
  • increased thirst
  • sedation
  • nausea
  • lack of coordination

As in the case of administering any medication for the first time, monitor the dog’s reaction to the drug. Actually, always monitor the reactions of any drugs since anyone (animal or human) can develop an allergic reaction to a drug even if the drug has been used many times before.

Interactions with Other Drugs

Consult the advice of a veterinarian before administering Benedryl if the dog is also receiving CNS depressant drugs such as acepromazine; anticholinergics such as metoclopramide or atropine; monoamine oxidase inhibitors (MAOIs) such as Preventic collars or selegiline; and any medications used in controlling wheezing such as ephedrine, epinephrine or theophylline.

Administration Can Be Tricky

Benedryl does not taste very pleasing so it may be a struggle to feed it to any dog. Hiding the pill among chucks of food covered in gravy can work, although there are some dogs that detect it and spit the pill out. There are “food pockets” that are made especially for administering pills because they hide the pill inside a jerky type treat and then are easily and quickly eaten by the dog.

If hiding the pill inside of food does not work, it may be necessary to actually toss the pill down toward the back of the throat. This does not mean that this method is as cruel as it may sound. This can be done gently and lovingly. Gently open the mouth and lightly toss the pill in toward the back of the tongue. Close the mouth and hold it shut. Gently stroke the throat until the dog swallows the pill. Remember the pill will make the dog feel better so “forcing” medications is not cruel.

 

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