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• Clarithromycin

  Clarithromycin is given by mouth and used off label to treat certain bacterial infections in several animal species. Do not use in pets that are allergic to it or other macrolide antibiotics, in rabbits, gerbils, guinea pigs, hamsters, or horses more than four months old.

• Clonazepam

  Clonazepam is given by mouth and is used off label to treat seizures and certain behavioral disorders. Common side effects include sleepiness, incoordination, drooling, excitement, or increased appetite. Do not use in pets that are allergic to it or other benzodiazepines or in pets with significant liver disease. If a negative reaction occurs, please call your veterinary office.

• Clopidogrel

  Clopidogrel is given by mouth in the form of a tablet or compounded liquid and is used off label to prevent abnormal blood clots in dogs, cats, and horses. Give as directed by your veterinarian. Common side effects include vomiting, diarrhea, or lack of appetite. Do not use in pets that are allergic to it or that have bleeding problems. If a negative reaction or bleeding occurs, please call your veterinary office.

• Coccidioidomycosis in Cats

  Coccidioidomycosis is a fungal disease caused by the soil fungus Coccidioides immitis or Coccidioides posadii. The early signs of coccidioidomycosis include fever, lethargy, poor appetite, coughing, and joint pain. Diagnosis is by biopsy of lesions or blood testing for antibodies to the Coccidioides organism. The prognosis for recovery is dependent of the extent of lesions in the cat’s body.

• Colloidal Oatmeal Topical

  Colloidal oatmeal topical (brand name DermAllay®, Epi-Soothe, others) is an anti-inflammatory, antipruritic (anti-itching), and emollient (softening, soothing) agent used in the treatment of surface skin disorders and skin reactions in cats and dogs. It is made from oat grains (Avena sativa). Colloidal oatmeal topical comes in spray, cream rinse, and shampoo forms.

• Coonhound Paralysis

  Coonhound paralysis is a sudden inflammation of multiple nerve roots and peripheral nerves in dogs, and occasionally cats. It can be caused by an immune reaction to raccoon saliva. It can also occur in dogs who have not encountered a raccoon. In this case, it is called acute idiopathic polyradiculoneuritis, and its cause is often unknown. Dogs with coonhound paralysis start out with a stiff-legged gait that rapidly progresses to paralysis of all four legs. Good nursing care is essential for recovery.

• Corneal Lipidosis

  Corneal lipidosis is an accumulation of fatty substances within the cornea. This is caused by genetics (corneal dystrophy), eye inflammation (corneal degeneration), or by an increase in circulating lipids in the body (hyperlipidemia). Visually, lipidosis appears as a sparkly or shiny area of the cornea. It is diagnosed by a thorough eye exam, bloodwork, and patient history. Treatment and prognosis will depend on the cause and may include treatment of underlying inflammatory conditions of the eye, or systemic treatment of elevated lipid blood levels.

• Corneal Ulcers (Ulcerative Keratitis) in Cats

  Ulcerative keratitis is inflammation in the cornea of the eye. The signs of ulcerative keratitis depend somewhat on the cause and how long the condition has been present. There are many potential causes of ulcerative keratitis, including trauma, infection, and abnormal tear production. Antibiotic ointment or drops will be prescribed and it is important to prevent additional trauma to the cornea. Superficial corneal ulcers typically heal within 5 to 7 days. Deeper or more complicated ulcers may take several weeks to heal and may require surgery in addition to medical treatment.

• Coronavirus Disease (COVID-19)

  COVID-19 is a disease caused by the coronavirus SARS-CoV-2. Current evidence suggests that person-to-person spread is the main source of infection. While there is evidence of transmission from humans to dogs and cats, it does not appear common. If you suspect that you are ill with COVID-19, you should take the same precautions with your pet as you would with people.

• Crystalluria in Cats

  Crystalluria refers to the presence of crystals in the urine. These crystals are made up of minerals and other substances that would normally be dissolved in the urine; crystals form when these substances do not remain dissolved in the urine and instead coalesce (join together) into crystals. Crystalluria is diagnosed via urinalysis.