SIDE EFFECTS: Nausea, vomiting, blurred vision, constipation, dry mouth, flushing, sweating, lightheadedness, dizziness, and drowsiness may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.Some people, particularly children, may experience excitability rather than drowsiness.To prevent constipation, maintain a diet adequate in fiber, drink plenty of water, and exercise. If you become constipated while using this drug, consult your pharmacist for help in selecting a laxative (e.g., stimulant-type with stool softener).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.Tell your doctor immediately if any of these unlikely but serious side effects occur: slow/shallow breathing, fainting, slow/irregular/fast heartbeat, involuntary muscle movements/stiffness, mental/mood changes (e.g., confusion, hallucinations, nervousness), numbness, restlessness, shakiness (tremors), trouble urinating.Tell your doctor immediately if any of these rare but very serious side effects occur: severe stomach/abdominal pain, very high fever, persistent nausea/vomiting, seizures, increased sweating, change in the amount of urine, dark urine, yellowing eyes/skin.A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
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