The most common antihistamine for dogs is diphenhydramine (brand name Benadryl). Also found in ProSense Dog Itch & Allergy Solutions Tablets, diphenhydramine is safe in most dogs if given in the recommended dosage of 1 mg of diphenhydramine per pound of body weight given by mouth.
Both cetirizine (Zyrtec) and loratadine (Claritin) are considered safe for dogs in the right dosage. However, they are also frequently combined with other ingredients like decongestants, which can hurt your dog. Always consult with a vet before giving your dog any new medication.
It is recommended to give your dog 0.5mg per pound of body weight. You can safely give Zyrtec to your dog up to 20 mg per day.
Apple cider vinegar has antiseptic, anti-fungal and anti-bacterial properties that help relieve dry skin and itching. For best results, use raw, organic, unfiltered apple cider vinegar. You can apply it directly on your affected skin with a cotton ball or washcloth.
Both vitamin B12 and vitamin A deficiencies may also cause itchy skin, so if you are experiencing chronically itchy skin, getting your level of these vitamins tested can be helpful. This testing will help determine whether these deficiencies are at the root of your skin sensitivities and itchiness.
Some popular natural remedies for itchy skin include taking lukewarm baths with colloidal oatmeal, avoiding itch triggers, moisturizing throughout the day with a gentle and fragrance free moisturizer, and using a humidifier. OTC antihistamines can also be helpful.
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.
Zyrtec comes in 5 and 10-milligram tablets and can be given either every 24 hours for atopic dermatitis or every 12 hours for allergy symptoms. The 10 mg pills are okay for dogs between 10 and 50 lbs, though 5-10 lb dogs should only take half (or a 5-mg tablet.)
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.
Quercetin: A Natural Antihistamine For Dogs
Are you looking for a natural anti-histamine for dog allergies? Quercetin is a bioflavonoid that acts as an antihistamine for dogs and has antioxidant and anti-inflammatory properties. Many veterinarians suggest Benadryl or Apoquel for allergies in dogs.
Several over-the-counter (OTC) human antihistamines can work to help relieve dog allergy symptoms, but we recommend that you consult with your veterinarian before administering any of these medications. Benadryl (diphenhydramine) is the most popular antihistamine for humans and can be effective for dogs as well.
Antihistamines like Benadryl and Zyrtec
ANTI-histamines, such as diphenhydramine (Benadryl®), certirizine (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.
Cetirizine (brand name Zyrtec®, Reactine®) is an antihistamine used to treat pruritus (itching) associated with atopic dermatitis, urticaria (hives), and insect-bite reactions in cats and dogs. Its use is in cats and dogs is 'off label' or 'extra label'.
Fexofenadine, commonly known as Allegra® or Telfast®, is a second generation antihistamine drug that may be used for dogs and cats to control itching and other signs related to allergic conditions. Fexofenadine is considered less sedating than other antihistamines.
Antihistamines. Diphenhydramine (Benadryl®), cetirizine (Zyrtec®), and loratadine (Claritin®) are commonly used antihistamines that relieve allergy symptoms or counteract allergic reactions. Antihistamines are usually safe but can make some dogs drowsy and others hyperactive.
While many over-the-counter human medications are unsafe for your dog, several antihistamines such as claritin, benadryl and zyrtec are safe to give your dog at the right dose under veterinary supervision.
Oral prescription allergy medicine for dogs
Apoquel is an oral tablet you can give your dog daily for his allergy symptoms. It works by suppressing your pup's immune system so he doesn't have such a strong reaction to the things he's allergic to.
When it comes to food allergies, peanuts, wheat, eggs, cow's milk, soy and shellfish are among the most common culprits. The itchiness caused by these foods and subsequent scratching can then lead to flare-ups or worsening of dermatitis symptoms.
Which antihistamine is best for allergic skin rashes? The best antihistamine to take during the day to help with allergic skin rashes is Curist Allergy Relief (levocetirizine) or another antihistamine like loratadine, which can provide 24-hour symptom relief without making you feel sleepy.