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  • Imidacloprid and pyriproxyfen (brand names Advantage®II, Advantage Plus®, Provecta®II) is a topical (spot-on) antiparasitic drug used to repel and kill fleas and lice in dogs and puppies that are at least 7 weeks of age and weigh at least 1.36 kg (3 lb). This medication is labeled for treatment of flea infestations in cats and kittens that are at least 7-8 weeks of age and weigh at least 0.9 kg (2 lb) or 2.3kg (5 lb), depending on the product. Imidacloprid and pyriproxyfen comes in topical solution form that is applied directly to the skin. Do not confuse this medication with K9 Advantix®II, Provecta® Advanced, or Activate®II, similar products labeled for use in dogs only, as those medications contain permethrin, which is toxic to cats.

  • Imidacloprid oral is given by mouth to treat flea infestations in dogs only. Side effects are uncommon but may include vomiting, soft stools, decreased appetite, or difficulty walking. Do not use this medication in cats, in puppies less than 10 weeks old or weighing less than 4 pounds, or in pregnant or lactating dogs.

  • Imidacloprid with flumethrin (brand name Seresto® collar) is a topical antiparasitic drug contained in a collar used for control of fleas, ticks, and chewing lice on dogs and puppies at least 7 weeks of age. This medication is labeled for control of fleas and ticks in cats and kittens that are at least 10 weeks of age. Imidacloprid with flumethrin comes in a collar impregnated with the medication that, if used properly, is effective for 8 months.

  • Imidacloprid, permethrin, and pyriproxyfen (brand names K9 Advantix®II, Provecta® Advanced, Activate®II) is a topical (spot-on) antiparasitic drug used in the prevention and treatment of fleas, ticks, mosquitoes, biting flies, and chewing lice in dogs and puppies that are at least 7 weeks of age that weigh at least 1.82 kg (4 lb). NEVER use in cats as permethrin is highly toxic to cats. Do not confuse this medication with similar products that do not contain permethrin.

  • Imidocarb dipropionate (brand name Imizol®) is a drug used to treat infections caused by protozoa (single-celled organisms that sometimes cause disease), such as babesiosis infection in dogs. It is also used off-label to treat other protozoal infections in dogs, cats, and horses. Imidocarb dipropionate is given by injection by a veterinarian.

  • Immune-mediated thrombocytopenia is a condition in which the body destroys its own platelets. Platelets are cells that help the blood to clot. Causes can be primary (autoimmune) or secondary to other underlying conditions. The prognosis is generally good, though relapses can occur.

  • Immunotherapy (oral and injectable) is a treatment that involves using a pet’s own immune system to fight health conditions, such as certain allergies or certain types of cancer. Immunotherapy is specially formulated for each individual. It comes in injectable and oral forms.

  • Skin and gut issues are problematic and can be caused by many things, including food allergies. The best way to identify food allergies is through an elimination-challenge diet trial, in which you eliminate potentially allergenic foods and treats for the length of the diet trial, then methodically add foods back into the diet to determine response. If a food allergy is identified, avoiding the food usually results in a good outcome, although some dogs develop new allergies in later years.

  • Imuquin®; is an immune-support supplement for dogs and cats that contains a blend of vitamins, minerals, omega fatty acids, and beta-glucans. It is given orally by sprinkling the powder on the pet's food.

  • Infertility in a female dog is defined as the inability to conceive and deliver viable puppies, even when mated multiple times with a known fertile male surrounding the time of ovulation. This handout outlines the varying causes of infertility in female dogs and how they may be diagnosed and treated.