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Methimazole is used to treat hyperthyroidism in cats. It works by blocking the thyroid gland from making thyroid hormone. The effect is temporary. Most cats with hyperthyroidism require lifelong treatment with methimazole unless other, permanent treatment options are pursued. More details on these options are available on the page entitled Hyperthyroidism in Cats.
Enalapril and benazepril are related members of a class of drugs called ACE inhibitors. They have similar effects and uses in veterinary medicine.
In veterinary medicine, sulfadimethoxine is used primarily to treat coccidia (Isospora) in puppies and kittens. Courses of sulfadimethoxine generally last from 3 to 21 days.
Sulfadimethoxine also may be used as an antibiotic, but this is not common in veterinary medicine.
Sulfadimethoxine is currently considered an inferior treatment option for coccidia. A different drug, ponazuril, is preferred.
Antihistamines such as hydroxyzine (Atarax®), diphenhydramine (Benadryl®), and chlorpheniramine (Chlor-Trimeton®) are used in veterinary medicine primarily to treat allergies that cause skin problems. Less often, they are prescribed to prevent carsickness, to treat severe allergic reactions to insect bites or stings, or as sedatives.
Clindamycin is a commonly used antibiotic in veterinary medicine. Clindamycin is used to treat a variety of bacterial infections. Some of its more common applications include treatment of dental infections, abscesses, infected wounds, and infected bones.
Doxycycline is an antibiotic related to tetracycline. It is effective against a variety of organisms, and is often used to treat bacterial infections. It is the antibiotic of choice for many diseases (such as Lyme disease) that are spread by ticks and some diseases caused by organisms known as Mycoplasma. It is commonly employed in the treatment of respiratory infections and fever of unknown origin in cats.