Human Medications That Are Safe for Skin Allergies in Cats

Many of the medications used in veterinary medicine were originally formulated for people. Veterinarians prescribe them for their patients in doses suitable for the size of the animal. Such medications are frequently prescribed for cats suffering from skin allergies. Never give your cat any human medication unless instructed to do so by your veterinarian.

  1. Antihistamines

    • According to Pet Education, antihistamines are up to 70 percent effective in controlling allergic reactions in cats. These include atopic allergies, which are caused by inhalants such as pollen but manifest themselves as skin lesions or sores from excessive grooming. Antihistamines used in felines that are manufactured for humans include over-the-counter products such as Benadryl (diphenhydramine), Tavist (clemastine fumarate) and Chlor-Trimeton (chlorpheniramine). All are H1 blocker types of antihistamines. The H2 blockers, such as Claritin, have not been found effective in treating cats. These medications may have side effects, including lethargy and diarrhea, in felines.

    Steroids

    • Steroids are generally given to cats with skin disorders after prior treatments have proved ineffective. Corticosteroids relieve severe itching and the pain associated with allergic skin reactions, including flea allergy dermatitis. Common steroids used for cats that are also used for humans include dexamethasone, methylprednisolone and flumethasone. Although some of these steroids come in tablet form, veterinarians often use a long-term injectable steroid if the cat is difficult to medicate with pills. Steroid side effects include weight gain, increased thirst and urination and hyperactivity. Steroid use for skin allergy treatment in cats is generally short-term, as there are more serious side effects associated with long-term use.

    Topical Medications

    • Hydrocortisone, available from pharmacies and supermarkets in a one percent strength, may be applied directly onto a cat's skin lesion if it is not in an area the cat can lick. According to Pet Education, because the topical product does not absorb well into the bloodstream, it does not pose the same possibility for side effects as injectable or oral steroids. Pet Education recommends that after applying hydrocortisone topically, you should get the cat involved in an activity or feed it so it does not concentrate on licking off the medication.