What's the best antihistamine for dogs over-the-counter?

Cetirizine (Zyrtec® or Reactine®) is one of the most commonly used over-the-counter antihistamines recommended by veterinarians. Claritin® can be used but is not typically recommended by veterinarians as some forms of Claritin® contain decongestants such as pseudoephedrine which is very toxic to dogs.
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Which human antihistamine is best for dogs?

Antihistamines with the active ingredients of diphenhydramine, chlorpheniramine, cetirizine, clemastine or loratadine are usually safe for most healthy adult dogs. Hydroxyzine is another dog-safe antihistamine and one of the most effective available, but it's only available on prescription.
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Is Benadryl or Zyrtec better for dogs?

Zyrtec has become the new first-line drug for dog allergy, largely because of its convenient dosing schedule. Although individual response to antihistamines does vary greatly, this year our clients are seeing a higher response rate than with Benedryl.
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Which is better for dog allergies, Benadryl or Claritin?

The best over-the-counter antihistamine for dogs has been Benadryl or diphenhydramine, although recently veterinarians have begun using Claritin (loratidine) and Zyrtec (cetirizine) in dogs. In cats, chlorpheniramine seems to work the best.
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How much Benadryl can I give my dog?

However, it's important to talk to your vet before giving your dog Benadryl, as it can interact with other medications or health conditions. The recommended dosage to administer the medication is typically 0.9 to 1.8 milligrams per pound of your dog's body weight, given 1-2 times per day.
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7 OTC Human Medications Safe and Effective for Dogs

Will Benadryl help my dogs itching?

Benadryl is commonly used to treat itchiness in dogs caused by skin allergies, and it also reduces many of the other symptoms of allergies, including: AKC is a participant in affiliate advertising programs designed to provide a means for sites to earn advertising fees by advertising and linking to akc.org.
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Will Benadryl make a dog sleepy?

Benadryl® may make some dogs a little sleepy and less responsive, but it doesn't do anything for their underlying anxiety. Benadryl® does has some efficacy in the prevention of motion sickness in dogs. So, if your dog is anxious because they're nauseous in the car, it could help.
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What is the best thing to take for dog allergies?

Allergy medications

Over-the-counter (OTC) antihistamine tablets include fexofenadine (Allegra Allergy), loratadine (Claritin, Alavert) and cetirizine (Zyrtec Allergy); over-the-counter (OTC) antihistamine syrups are available for children.
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How long does it take for Benadryl to work in dogs?

Generally, Benadryl starts working within 30 to 60 minutes of giving it to a dog. How the Benadryl is administered (oral liquid, tablet, capsule, or injection) will determine how quickly it takes effect.
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What over the counter allergy medicine is best for dogs?

Antihistamines for Skin Allergies in Dogs
  • Cetirizine (Zyrtec) ¼ – ½ mg per pound (one 10mg tab per 30-40 lbs) twice daily.
  • Loratadine (Claritin): ¼ mg per pound (half of a 10mg tablet per 20 lbs) once daily.
  • Clemastine (Tavist-1, Antihist-1): 0.02mg per pound (one 1.34mg tablet per 65lb dog) twice daily.
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What brand of Benadryl is good for dogs?

Diphenhydramine (brand name: Benadryl®, Vetadryl®, Banophen®, Genahist®, Diphenhist®, Unisom®, Sominex®) is an antihistamine used in cats, dogs, ferrets and other small mammals, birds, horses, and cattle to treat allergic reactions, motion sickness, and vomiting.
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Do vets recommend Benadryl for dogs?

Although many over-the-counter human medications are not recommended, Benadryl for dogs has its place in veterinary medicine. Integrative veterinarian Dr. Julie Buzby explains how, why, and when Benadryl is used for dogs.
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Can I give my dog Zyrtec in the morning and Benadryl at night?

You can also give Zyrtec in the AM in combination with the Benadryl at night, 5mg per day for a small dog and 10mg for a large dog.
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What is a 24 hour antihistamine for dogs?

Loratidine (Claritin®) dose: The typical dose is 0.5 mg/kg every 24 hours. Cetirizine (Zyrtec® or Reactine®) dose: The typical dose is 1 mg/kg every 24 hours. Hydroxyzine (Vistaril®) dose: The typical dose is 2-4 mg/kg every 8-12 hours.
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What is the best natural antihistamine for dogs?

What can I give my dog as an antihistamine? Natural options include quercetin, turmeric, and omega-3 fatty acids. Always consult a veterinarian before starting any new supplement.
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Can you buy antihistamines for dogs over-the-counter?

Antihistamines are usually safe for dogs but can make some dogs drowsy and others hyperactive. OTC antihistamines may contain other ingredients, such as decongestants, that are not safe for dogs. Read the label carefully to ensure that the product only contains antihistamine.
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Is 25mg of Benadryl too much for a dog?

The general dose of Benadryl (diphenhydramine) is 2 to 4 mg/kg up to three times day. If your dog weighs 25 lbs (11.3 kg) the dose of Benadryl would be 22.6mg to 45.2mg up to three times a day. Benadryl tablets are available in 25mg and 50mg strength.
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Is there a difference between human Benadryl and dog Benadryl?

Some human formulations of Benadryl® are often safe to use in animals. However, dosages for animals usually differ from dosages used by people. Many sprays, liquids and creams can contain additional ingredients like alcohol or xylitol which can make them unsafe for use in pets.
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Is Claritin or Zyrtec better for dogs?

Both Claritin and Zyrtec are effective at reducing allergy symptoms in pets. However, some pets may respond better to one medication than the other. Always consult with your veterinarian first. Additionally, it's important to note that certain forms of Claritin may contain decongestants, which are toxic to pets.
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Which antihistamine is safe for dogs?

4 Antihistamines That You Can Give to Your Dog for Itching
  • Diphenhyramine (Benadryl)
  • Cetirizine (Zyrtec)
  • Loratidine (Claritin)
  • Chlorphenaramine (Chlortimeton)
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What antihistamine is good for dog allergies in humans?

Treating Dog Allergies

Your doctor might recommend: Antihistamines, which block the effects of a chemical that triggers dog allergy symptoms; they're sold over the counter -- like cetirizine (Zyrtec), diphenhydramine (Benadryl), fexofenadine (Allegra), and loratadine (Claritin) -- or by prescription.
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Which Benadryl is safe for dogs?

Veterinarians can also prescribe the dog version of Benadryl. It is a medication called Vetadryl, the FDA-approved form of Diphenhydramine for dogs and cats. It comes in different milligrams to suit various dog sizes, and it has flavoring for dogs, which can help make it less distasteful to them.
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Does Benadryl stop dogs from itching?

While antihistamines, such as Benadryl®*, have historically been an accessible and easy over-the-counter option for relief, studies have demonstrated that they have little to no effect on long-term skin allergies and dog itchiness.
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What OTC allergy meds are safe for dogs?

ANTI-histamines, such as diphenhydramine (Benadryl®), cetirizine (Zyrtec®), and hydroxyzine, are commonly taken by humans to treat allergy symptoms and can be used for dogs as well. These medications work by preventing histamine from binding to cells and exerting its effects.
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