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Dogs + Medications & Supplements

  • Sevelamer is a drug used to control high blood levels of phosphorus (hyperphosphatemia) in dogs and cats with chronic kidney disease. It acts as a phosphate binder in the intestines (it attaches to extra phosphates to keep them from entering the blood).

  • Sildenafil (brand name: Viagra®) is a vasodilator used off label to treat high blood pressure in the blood vessels of the lungs (pulmonary hypertension) in dogs and sometimes cats. It is also used to treat megaesophagus. In cattle, it may be useful in treating uterine conditions such as endometritis.

  • Silver sulfadiazine topical is an antimicrobial used to treat skin infections and burns in cats, dogs, and exotic pets. It is used off label in veterinary medicine. Silver sulfadiazine topical comes in a topical cream.

  • Silymarin, also called milk thistle, is a nutritional supplement used to treat a variety of liver conditions, diseases, and toxicities in cats, dogs, birds, rabbits, horses, and other companion animals. It may also have some efficacy in helping to prevent certain cancers, preventing chemotherapy side effects, and protecting the kidneys.

  • Simethicone is an anti-gas agent used to help treat pain, bloating, and flatulence caused by excessive gas in the gastrointestinal tract of cats, dogs, and other animals. It works as an anti-foaming agent by reducing surface tension on gas bubbles.

  • Slippery elm is given by mouth and is used over the counter to treat cough and stomach upset in dogs and cats. Give as directed by your veterinarian.

  • Smectite (Bio-Sponge®) is an intestinal support supplement used in various animal species, including dogs, cats, horses, cattle, and small ruminants. It has adsorbent properties may help bind toxins, bacteria, viruses, and free-radicals in the intestinal tract.

  • 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.

  • Soy protein is sourced from soybeans and has been used as a supplement in pets to help with weight management, metabolic disease management, cancer management (especially lymphoma), and hormone-related conditions such as prostatic hypertrophy and urinary incontinence.