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Illustrated Articles

Cats + Medications & Supplements

  • Spironolactone is given by mouth and is used off label to treat congestive heart failure, fluid accumulation, and other cardiovascular problems.

  • Spironolactone + hydrochlorothiazide is a combination aldosterone antagonist (spironolactone) and thiazide diuretic (hydrochlorothiazide) used to remove excess fluid and salt from the body in cats and dogs. This medication can be used in combination with other drugs to lower blood pressure and for protective effects on the heart muscle. It has also been used in dogs with fluid-up in the abdomen due to liver failure.

  • St. John’s wort is given by mouth and is used over the counter to treat pain, depression, anxiety, and other conditions. Give as directed by your veterinarian. The most common side effects include gastrointestinal upset, sun sensitivity, skin reactions, allergic reactions, dry mouth, or restlessness. Do not use in pets that are allergic to it, pregnant, nursing, very young, or very old or debilitated. If a negative reaction occurs, please call your veterinary office.

  • Stanozolol is given by mouth and is used off label to treat poor appetite, anemia, tracheal collapse, and other conditions. Give as directed by your veterinarian. Side effects may include behavior changes, limb swelling, or prevention of heat cycles. Do not use in pets that are allergic to it, are pregnant, breeding, or nursing. Pregnant women should NOT handle this medication. If a negative reaction occurs, please call your veterinary office.

  • Sucralfate (brand names Carafate® and Sulcrate®) is used to treat ulcers in cats and dogs. It is used off label or extra label. Side effects to sucralfate are not common, but can include constipation or vomiting. Other drugs may interact with sucralfate because it may impair the absorption of the medications. If blood is visible in stool or vomit it could indicate that the ulcers are getting worse. If blood is observed, contact your veterinarian.

  • Sulfadiazine/trimethoprim is given by mouth in the form of a liquid suspension or is given by injection in the hospital. It is commonly used to treat bacterial and parasitic infections, sometimes off label, in dogs, cats, small mammals and other exotics. Common side effects include a decreased appetite, vomiting, and diarrhea, although more serious side effects are possible, such as dry eye, or liver, blood, or urinary problems. Do not use in pets that have severe liver damage, blood cell problems, dehydration, or sulfa allergies. If a negative reaction occurs, please call your veterinary office.

  • Sulfadimethoxine is an antimicrobial given by mouth in the form of a tablet or liquid suspension, used primarily to treat coccidiosis. Its use for treating small mammals and reptiles is off label. Common side effects include vomiting, diarrhea, and decreased appetite. This medication should not be used in pets that are allergic to it, pregnant, lactating, or have severe liver or kidney dysfunction. If a negative reaction occurs, call your veterinary office.

  • Sulfamethoxazole/trimethoprim is given by mouth in the form of a liquid suspension or is given by injection in the hospital, and it is commonly used to treat bacterial and parasitic infections, sometimes off label, in dogs, cats, small mammals, and other exotics. Common side effects include a decreased appetite, vomiting, and diarrhea, although more serious side effects are possible such as dry eye, or liver, blood, or urinary problems. Do not use in pets that have severe liver damage, blood cell problems, dehydration, or sulfa allergies. If a negative reaction occurs, please call your veterinary office.

  • Sulfasalazine is given by mouth and is used off label to treat inflammatory large bowel disease and vasculitis. Give as directed by your veterinarian. Side effects include dry eye, decreased appetite, vomiting, yellowing of the skin, eyes, or body fluids. Do not use in pets that are allergic to it or other sulfonamides or salicylates, or in Doberman Pinschers, Miniature Schnauzers, or Samoyeds, or in pets with dry eye/KCS, intestinal or urinary blockages, or severe dehydration. If a negative reaction occurs, please call your veterinary office.

  • Sulfur, precipitated, topical (brand name Sulfodene®, others), is a medication used in the treatment of seborrheic (dry or greasy dandruff) disorders in cats and dogs to dissolve skin flakes and scales. It can have antibacterial, antifungal, and antiparasitic effects. It may be specially compounded and/or combined into a formulation with other medications.