SIDE EFFECTS, that may go away during treatment, include dry mouth, constipation, vomiting, blurred vision, or nosebleed. If they continue or are bothersome, check with your doctor. CHECK WITH YOUR DOCTOR as soon as possible if you experience pain or white patches in your mouth or on your tongue, or difficulty urinating. Rarely, immediately after using a dose of this medicine your breathing may become more difficult and wheezing may worsen. If this occurs, CONTACT YOUR DOCTOR IMMEDIATELY. CONTACT YOUR DOCTOR IMMEDIATELY if you experience a rapid or irregular heartbeat. AN ALLERGIC REACTION to this medicine is unlikely but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include rash, itching, swelling, severe dizziness, or severe trouble breathing. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.