Do any drugs cause recurrent mouth ulcers?
Any drugs that affect your immune system can cause mouth ulcers. Some drugs change the acidity in your mucous membranes (mouth lining) and can cause irritation and soreness. Try baking soda and warm h2o, 1:5 dilution after eating and at bed. No commercial mouthwashes and a soft toothbrush. If the sores continue, you need to consult a physician and get your blood count checked to see if your white blood cells are high OR too low!!