Dizziness, lightheadedness, drowsiness, tiredness, constipation, diarrhea, stomach upset/gas, nausea, trouble sleeping or unusual dreams may occur as your body adjusts to the medication. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.