Mouth ulcers caused by targeted drugs, you can use anti-inflammatory, analgesic and promote mucosal repair drugs, such as chlorhexidine tablets, dexamethasone ointment, recombinant human epidermal growth factor gel. Eating targeted drugs appear mouth ulcers, is a side effect of targeted drugs, this time to consult a doctor in a timely manner, under the guidance of the doctor’s standardized treatment, the more minor oral ulcers, you can continue to take targeted drugs, at the same time the use of chlorhexidine tablets antibacterial sterilization to ease the pain, dexamethasone ointment coated wounds anti-inflammatory and analgesic, recombinant human epidermal growth factor gel coated to promote the repair of wounds on the surface of the ulcers. If the ulcer is more serious, consult your doctor if you can stop using the targeted drug, reduce the dosage or replace the targeted drug, and then supplement with the above drugs. In addition, usually pay attention to light diet, avoid smoking and alcohol, avoid chili and other stimulating foods.