Drowsiness, dizziness, blurred vision, muscle pain, excessive hair growth or loss, change in sexual desire, weight change, increased saliva production, sore gums, or cough may occur. 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.
Tell your doctor immediately if any of these serious side effects occur: loss of coordination, mental/mood/behavior changes.
Tell your doctor immediately if any of these unlikely but serious side effects occur: slowed breathing, easy bruising/bleeding, unusual eye movements, unusual fatigue, fast/pounding heartbeat, unusual muscle movement, trouble urinating.
Seek immediate medical attention if any of these rare but very serious side effects occur: weakness on one side of the body, slurred speech.
If you have several different types of seizure disorders, you may experience a worsening of seizure activity at the start of using this medication. Consult your doctor immediately if this happens. The addition or dosage adjustment of other anti-seizure medications may be necessary to keep seizures under control.
A serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction include: rash, itching, swelling, 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.