Cats may have develop ulcers, a sore on the membrane lining the stomach or other parts of the digestive tract. Ulcers may cause cats to suffer with sporadic or chronic vomiting leading to excess weight loss and anemia. Stomach ulcers, also known as ulcerative colitis, should be treated quickly and can be treated and even cured if attended to properly and immediately. Sulfasalazine tablets are a medication that works by inhibiting the production of inflammatory chemicals decreasing the production of prostaglandins and leukotrienes, chemicals that lead to the inflammation caused by ulcerative colitis. Prednisolone is a corticosteroid used to treat various inflammatory and allergy conditions as well as other diseases, such as the inflammation caused by ulcers.