Can Dogs Eat Zyrtec?

Zyrtec is a human medication that is mostly used when someone gets affected by allergies.

This is a type of antihistamine that is efficient in treating diseases like rhinitis, dermatitis, and urticaria.

Sometimes human medications also work well for dogs. Thus, owners search for Can Dogs Eat Zyrtec? Well, If your dog has an allergic reaction, your veterinarian may suggest giving him dog Zyrtec drops, which you can get at any regular pharmacy. Is the drug safe for a pet?

Can Dogs Eat Zyrtec?

  • YES, under veterinarian guidance. Zyrtec (cetirizine) can treat canine allergies, but it’s crucial to follow your vet’s instructions for dosage and safety.
  • NEVER give your dog Zyrtec-D. It contains pseudoephedrine, which is toxic to dogs.

Benefits of Zyrtec for Dogs

  • Allergy Relief: Cetirizine is an antihistamine that combats the itching, swelling, and discomfort associated with allergies in dogs.
  • Limited Side Effects: Cetirizine is generally well-tolerated by dogs.

Potential Risks

  • Sensitivity: Some dogs may still experience side effects like sedation, urinary issues, or digestive upset.
  • Liver/Kidney Issues: Zyrtec might be unsuitable for dogs with existing liver or kidney problems.
  • Drug Interactions: Always inform your vet about any other medications your dog takes.

Important Considerations

  • Vet Consultation: Always get your vet’s approval before giving Zyrtec to your dog. They’ll determine the right dosage and rule out underlying health issues.
  • Zyrtec-D Warning: Pseudoephedrine, found in Zyrtec-D, is highly toxic to dogs. Never use this version with your pet.
  • Monitoring: Watch for signs of an allergic reaction or side effects after giving Zyrtec.

How to Give Zyrtec to Your Dog

  • Dosage: Strictly follow your veterinarian’s instructions. Typical dosage is based on the dog’s weight.
  • Form: Zyrtec comes in tablets or drops. Tablets can be given with food or directly.
  • Duration: Your vet will determine how long your dog should take Zyrtec.

Key Takeaways

  • Zyrtec (cetirizine only) can be a helpful tool in managing your dog’s allergies when prescribed responsibly.
  • Always prioritize veterinary guidance for Zyrtec use in dogs.
  • Proper dosing and close monitoring are essential for your dog’s safety.
  • If your dog has a negative reaction to the Zyrtec, stop use and consult your vet immediately.

Can Dogs Eat Zyrtec?

Yes, the consumption of the antihistamine named Zyrtec is suggested for the canine.

The ingredients present in it are very efficient in removing the toxins that are used to cause allergies in the canine. Thus its consumption is preferred.

However, some varieties of Zirtek contain the substance pseudoephedrine. It is strictly forbidden to give it to dogs, for them such medicine is toxic!

You can give “Zyrtec”, which contains only cetirizine. This drug is harmless to your pet if there is no individual intolerance. Start giving medicine with a small dosage and see if there are any allergies or vomiting. If the dog feels well, you can gradually increase the dose to the one recommended by the veterinarian.

Zyrtec is not recommended for older dogs and pets with liver disease. In them, the medicine is absorbed worse and can adversely affect health.

Also, the fact to notice here is that the consumption of Zyrtec by the canine needs to be strictly avoided if the dog is already suffering from renal or kidney issues because its consumption can even worsen the conditions as it can lead to urine retention, along with this its feeding is also not preferred if the canine is sensitive to the antihistamine.

Nutritional Value Of Zyrtec For Dogs

Well, by the nutritional value of Zyrtec, it means the main ingredients that are used to produce these medicines. Veterinarians recommend that you carefully study the composition of Zyrtec tablets before giving them to your pet. The reason for concern is that this drug is produced with different active ingredients:

  • If the drug is based on “cetirizine“, the drug is considered suitable for veterinary use as an allergy medication;
  • If the active substance is “pseudoephedrine“, it is strictly forbidden to give medicine to animals.

The active ingredient cetirizine has antihistamine, antipruritic, antiexudative effects. It rarely causes sedation, is easily tolerated by animals and has virtually no contraindications or side effects.

The pseudoephedrine contained in Dog Zyrtec-D has the following actions:

  • Adrenomimetic – causing various metabolic and functional changes in the body. In pets, such drugs can dramatically increase intraocular pressure, so they are not recommended by veterinarians;


  • Pseudoephedrine refers to narcotic substances and is prohibited for dogs
  • Cetirizine is considered a safe substance, so Zyrtec with it as an active ingredient can be used to treat allergic manifestations in animals.

Health Benefits Of Zyrtec For Dogs

The benefits the canine gets after the consumption of Zyrtec are mainly because of the ingredients present in it.

Thus by going through the benefits of the ingredients of Zyrtec, the dog owner will be able to recognize why they should include this in the canine diet.


Gelatin is important to be present in the canine’s body because it ensures the proper health of the joints and aids digestion. This also stimulates the regulation of digestive juice and enzymes.


It is used to provide elasticity to the medicine so that the consumers don’t have any difficulties properly swallowing it.


The presence of mannitol in the canine’s body promotes the functioning of the kidneys.

It starts rapidly filtering the toxins, thus releasing all the toxins from the body and making the pet free from allergens.

Polyethylene Glycol 400

As per the research, this chemical is used to relieve the itchiness or dryness that happens anywhere on the skin after getting affected by allergies

Sodium Hydroxide

The presence of sodium hydroxide in the medicine is only for killing the pathogenic bacteria responsible for the cause of allergens in the canine’s body.

Potential Hazards Associated With Zyrtec For Dogs

As a rule, cetirizine does not cause negative side effects, however, caution should be exercised when treating allergies and itchy skin with Zyrtec in dogs suffering from chronic kidney and liver diseases.


Omega-3 present in Zyrtec can alleviate the condition of the pet, and reduce itching in atopic dermatitis.

Zyrtec based on cetirizine does not cause dangerous consequences for the fetus, therefore it can be used for pregnant and nursing dogs (at the same time, due to its toxicity, pseudoephedrine causes a slowdown in body growth and bone formation in the fetus). But it is extremely undesirable to give medicine to lactating dogs – with milk, it can enter the body of puppies.

In older animals, the drug is absorbed worse and does not give the desired result, while it can adversely affect the general health of the dog, in particular, liver function.

There have been no cases of overdose, however, veterinarians warn that the medicine can cause an allergic reaction, so it is recommended to give a lower dose for the first time and monitor the condition of the animal.


It is impossible to give the dog other sedatives, drugs that depress the central nervous system at the same time as Zirtek.

Possible Side Effects Of Zyrtec For Dogs

Sometimes dog owners accidentally feed this medicine to the canine without checking its health condition, which can lead to some side effects.

Below are the most common side effects of Zyrtec, which the dog owners can notice to take necessary precautions at the time.

  • First heartbeat
  • Weakness
  • Insomnia
  • Urination problem
  • Vision problem
  • Dizziness
  • Drowsiness
  • Nausea
  • Constipation
  • Lethargy

It has been suggested to the dog owners who have been searching for can dogs

eat Zyrtec to treat dog’s allergy symptoms, they should abruptly go for a visit to the vet after noticing such symptoms in the canine,

Since the materials get completely absorbed in the dog’s body, it will be very difficult for the dog to recover from it, and trying home remedies for treatment can even worsen the condition.

Allergic Reaction To Zyrtec In Dogs

Of course, an allergic reaction may appear in your dog due to anything out there. Even from the ingredients present in a drug. Allergic reactions in dogs are most often manifested in the skin form. This is a range of clinical signs and symptoms.

First of all, the owners of allergy sufferers observe excessive itching in them. It has a certain localization or manifests itself throughout the body.

Thus, the main signs of an allergy on the skin of your dog after having something that your dog is allergic to will be:

  • papules (red nodules without pus)
  • itching
  • Excoriations (scratches, scratches, ulcers with blood crusts)
  • pimples
  • Alopecia (baldness)
  • Changes in skin pigmentation
  • Bad smell
  • hives
  • skin hyperemia (redness)

Dog With Diabetes And Zyrtec

Your veterinarian may advise you that Zyrtec-D isn’t for your dog if your dog has any of the following conditions: thyroid disease, heart disease, or DIABETES.

So, in case your dog is already suffering from diabetes, it is better to avoid giving Zyrtec to dogs.

How To Feed Zyrtec To Your Dog?

You need to know the proper dosage of dogs Zyrtec as veterinary medicine for allergic issues. The drug is sold in a regular pharmacy in two dosage forms – tablets and drops. For use in the treatment of pets, one should be guided by the appointment of a veterinarian and strictly follow the therapy regimen drawn up by him.

If you are recommended to use a tablet then you can either help your dog directly swallow the tablet or add it to his food.

On the other hand, if you are recommended to use a drop then follow your vet’s instructions to provide the right dosage to your dog.


Do not forget to check before buying that it is cetirizine that is the active ingredient of the drug.

How Many Zyrtec Should A Dog Eat

The correct dosage depends on the pet’s body weight and amounts to 1.1 mg of the active ingredient per 1 kg of the animal’s weight. The treatment regimen depends on the diagnosis:

  • With allergic dermatitis (food allergy, drug allergy, or flea allergies due to insect bites) – twice a day, at regular intervals;
  • Atopic dermatitis – 1 time per day.

Sometimes in atopic dermatitis, veterinarians prescribe a single dose of 5-10 mg 1 time per day. So, it is easier and more convenient to calculate the required amount of medicine – after all, taking it for the animal will be lifelong. It is more convenient to give the medicine using the liquid form of the drug, with food or forcibly.

Zyrtec-Based Recipes For Dog Treats

Zyrtec (another name Cetirizine) is a medical antiallergic, antihistamine drug that can be bought at a regular pharmacy without a prescription. Dosage form – tablets, drops for oral administration.

So, as Zyrtec is medicine, we are not able to provide you with any recipes here. However, you can add Zyrtec tablets to your dog’s food to treat symptoms of allergies in him.

Pets can suffer from allergies. Provoking factors can be food, medicines, and even substances that are in the air. Veterinarians usually prescribe antihistamines from those used in medicine.


Not all drugs are suitable for four-legged pets, so before giving tablets or drops in their foods, you should find out if Zyrtec or other antiallergic drugs are suitable for your dogs or not.


No matter what allergy symptoms or allergic reactions your dog gets, you should not start giving Zyrtec to your dog without consulting your vet. Most veterinarians are inclined to believe that it is necessary to give 5-10 mg of the drug per day to the dog. However, the dosage may vary.

It depends on the size and age of your pet. A puppy will need a lower dosage than an adult dog, and a representative of a small breed less than a large one.

You should start taking the drug with a lower dosage to notice and prevent unwanted reactions in time: an allergy to the drug, and side effects (increased salivation, vomiting).

An overdose of the drug, subject to the treatment regimen, is almost impossible. Therefore, strictly follow the instructions of the veterinarian.


Do Dogs Like the Taste of Zyrtec?

No, as per the comments made by the dog owners over how the dog reacts after consuming this human medicine. It cannot be said that dogs are attracted to the taste of this Zyrtec.

How Much Can Zyrtec be Toxic for the Canines?

The reports collected from the surveys have shown that exceeding the dose of Zyrtec from 20 mg per day for the canine can be toxic, as it will be irresistible for the body of the canine.

Can Dogs Eat Benadryl and Zyrtec Together?

No, it is not suggested to the dog owners to feed Benadryl and Zyrtec together to the canine. This is because both are antihistamines, and their consumption can lead to stronger side effects.

Also, because Benadryl possesses soothing properties, its consumption together is not suggested for the canine. Make sure to give this medication to the canine individually and only after getting the proper recommendation from the veterinarian.

Aapt Dubey
Aapt Dubey

Aapt Dubey, a devoted canine enthusiast and experienced dog Owner, brings boundless passion to our team. With a heart full of love for our four-legged friends, Aapt is dedicated to sharing insights on dog care, behavior, and training to make every pup's life happier and healthier at

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