Topamax Side Effects

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Topamax:

Constipation; decreased sweating; diarrhea; dizziness; drowsiness; dry mouth; flu-like symptoms; headache; loss of appetite; nausea; nervousness; numbness or tingling of the skin; runny nose; sore throat; stomach pain or upset; taste changes; tiredness; trouble sleeping; weight loss.

Seek medical attention right away if any of these SEVERE side effects occur when using Topamax:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blood in the urine; blurred vision; bone pain; chest pain; confusion; decreased coordination; double vision or other vision changes; eye pain or redness; irregular heartbeat; loss of consciousness; memory problems; menstrual changes; muscle or joint pain, cramps, or weakness; new or worsening mental or mood changes (eg, aggressiveness, agitation, anxiety, depression, exaggerated feeling of well-being, hostility, impulsiveness, inability to sit still, irritability, panic attacks, restlessness); rapid, shallow breathing; red, swollen, blistered, or peeling skin; ringing in the ears; severe or persistent loss of appetite; severe stomach, side, or back pain; significant weight loss; speech problems; stupor; suicidal thoughts or actions; tremor; trouble thinking, concentrating, or remembering things; trouble walking; unexplained fever; unusual bruising or bleeding; unusual eye movements; unusual tiredness; vomiting.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.