Keep all doctor and laboratory appointments while you are using this medicine. Before you have any medical or dental treatments, emergency care, or surgery, tell the doctor or dentist that you are using this medicine. Avoid large amounts of caffeine-containing foods and beverages, such as coffee, tea, cocoa, cola drinks, and chocolate. Before switching brands of this medicine, consult your doctor or pharmacist. Before you begin taking any new medicine, either prescription or over-the-counter, check with your doctor or pharmacist. For women: if you plan on becoming pregnant, discuss with your doctor the benefits and risks of using this medicine during pregnancy. This medicine is excreted in breast milk. If you are or will be breast-feeding while you are using this medicine, check with your doctor or pharmacist to discuss the risks to your baby.

Side effects, that may go away during treatment, include nervousness, restlessness, or nausea. If they continue or are bothersome, check with your doctor. Check with your doctor as soon as possible if you experience heartburn, stomach pain, diarrhea, black or tarry stools, difficulty sleeping, confusion, change in behavior, headache, fast or irregular heartbeat, dizziness, muscle twitching, seizures, or fast breathing. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.

If your breathing symptoms do not improve or if they become worse, contact your doctor. Carry an identification card at all times that says you are taking this medicine. Do not share this medicine with others for whom it was not prescribed. Do not use this medicine for other health conditions. Keep this medicine out of the reach of children. if using this medicine for an extended period of time, obtain refills before your supply runs out.