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Dogs + Medications & Supplements

  • Isoniazid (INH) is an antimycobacterial that has been used to prevent infection of mycobacterial disease in small animals in households with humans who have been diagnosed with tuberculosis. It has also been used as part of a combination protocol to treat mycobacterial disease in cats and dogs. Treating active infections is controversial due to zoonotic transmission potential - consult with local public health officials before treating.

  • Isopropyl myristate topical (brand name Resultix®) is a topical, non-insecticidal product containing an ester alcohol (isopropyl) and an acid (myristate). It is used for the removal and killing of attached, crawling ticks on cats and dogs. Sprays are applied topically, directly to the skin at the site of tick attachment.

  • Isoxsuprine is a vasodilator that relaxes blood vessel walls outside major organs. It has been used to help treat frostbite in birds and certain conditions in dogs. There are no isoxsuprine products that are approved by the U.S. Food and Drug Administration (FDA), so it must be compounded in the United States.

  • Itraconazole is given by mouth in the form of a capsule, tablet, or liquid to treat fungal infections in cats and for off-label treatment in dogs and small mammals. The most common side effects are anorexia, vomiting, liver toxicity, skin lesions, or limb and vessel swelling. It should not be used in pets with liver disease or low stomach acid production, and used with caution in pregnant, lactating, or pets with heart disease.

  • Itraconazole ophthalmic is a topical antifungal used to treat fungal eye infections (fungal keratitis) in horses, dogs, and other animals. This medication is used off label in veterinary medicine. Itraconazole ophthalmic comes in liquid drop suspension form that must be specially compounded.

  • Ivermectin is most used as a heartworm preventive in dogs and cats. It is also used off label for treating a variety of internal and external parasites. Ivermectin may be combined with other deworming medications. Ivermectin is available as tablets, chewable tablets, a topical liquid (for ear mite treatments), and an injectable that your veterinarian will administer.

  • Ivermectin + pyrantel (brand names Heartgard® Plus, Iverheart Plus®, Tri-Heart® Plus) is a combination of antiparasitic medications used to prevent heartworm and to treat and control roundworm and hookworm in dogs. Ivermectin + pyrantel is given by mouth as a flavored chew tablet.

  • Ivermectin + pyrantel + praziquantel (brand names: Iverhart Max, QuadriGuard) is a combination of anti-parasitic medications used to prevent heartworm and control roundworm, hookworm, and tapeworm in dogs. It is given by mouth as a flavored chew tablet.

  • Kaolin + pectin (brand names: Kaopectolin®, Kao-Pec®, KaoPect®, Kao-Pront®, Kaogel®) is a gastrointestinal protectant that is used to treat diarrhea and certain toxicities in cats, dogs, horses, birds, ferrets and other small mammals.

  • Ketoconazole is an antifungal given by mouth in the form of a tablet, used off label to treat fungal infections in dogs, cats, small mammals, and reptiles. The most common side effects are vomiting, diarrhea, lack of appetite, and weight loss. Do not use in pets that are allergic to it and use extreme caution when using in cats or pregnant pets.