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Educational Articles

Medications & Supplements

  • Sarolaner is given by mouth and is used to treat flea and tick infestations and has also been used off-label to treat certain types of mange and mites. Give as directed. Side effects are uncommon but may include stomach upset or neurologic symptoms. Do not use in pets with a history of seizures. If a negative reaction occurs, please call the veterinary office.

  • Selemectin is used topically on the skin to treat various parasites, both on and off label. Side effects are rare but may include hair loss at application site, gastrointestinal upset, skin reactions, or neurologic signs. Use with caution in sick or underweight pets, or dogs with the MDR1 mutation. If a negative reaction occurs, please call your veterinary office.

  • Selamectin + sarolaner is used topically on the skin to treat various parasites, both on and off-label, and prevent heartworm in cats. Side effects are rare but may include hair loss at the application site, gastrointestinal upset, skin reactions, or neurologic signs. It should be used with caution in sick or underweight cats. If a negative reaction occurs, please call your veterinary office.

  • Selegiline is typically given by mouth and is used off and on label to treat signs due to cognitive dysfunction syndrome, pituitary dependent Cushing’s disease, anxiety and certain phobias. Side effects may include vomiting, diarrhea, drooling, lack of appetite, and behavioral changes. Do not use in pets that are allergic to it, are aggressive, or in pets receiving other MAOIs, including certain tick collars. If a negative reaction occurs, please call your veterinary office.

  • Sertraline is given by mouth and is used off label to treat behavior disorders in dogs and cats. Common side effects include tiredness, vomiting, diarrhea, lack of appetite, anxiety, irritability, sleeplessness, shaking, tremors, itchy skin, or panting. Do not use in pets that are allergic to it or other SSRIs, or pets that are using MAOIs, flea/tick collars, or cisapride. If a negative reaction occurs, please call your veterinary office.

  • Ophthalmic autologous serum is a blood-derived product used to treat corneal ulcers in animals. Ophthalmic autologous serum is part of the blood and is collected directly from the patient. It is in liquid form.

  • Sildenafil is given by mouth or injection and is used off label to treat high blood pressure in the lungs or to treat megaesophagus. Give as directed. Side effects are uncommon but may include vomiting, diarrhea, decreased appetite, or skin redness in the groin area. Do not use in pets that are allergic to it or pets that take nitrate medications. If a negative reaction occurs, please call your veterinarian.

  • Slippery elm is given by mouth and is used over the counter to treat cough and stomach upset. Give as directed by your veterinarian. There are no known side effects. Do not use in pets that are allergic, pregnant, or nursing. If a negative reaction occurs, please call your veterinary office.

  • Sodium chloride (hypertonic) ophthalmic is a topical medication used to reduce surface (corneal) swelling of the eye in cats and dogs. Sodium chloride is available without a prescription but should only be used under the direction of a veterinarian. It may be used “off label” or “extra label” to treat eye conditions in animals other than cats or dogs. Sodium chloride (hypertonic) ophthalmic comes in ointment and liquid drop form. Avoid use in animals with corneal ulceration or dry eye.

  • Sotalol is given by mouth or injection and is used off label in dogs and cats to treat abnormal heart rhythms. The most common side effect is tiredness. Do not use in pets that are allergic to it or that have asthma, heart block, slow heart rate, uncontrolled congestive heart failure, or shock. If a negative reaction occurs, please call your veterinary office.