Get emergency medical help if you have signs of an allergic reaction to Zonegran: any form of skin rash, hives; fever, swollen glands, feeling weak or tired, severe muscle pain, unusual bruising or bleeding; yellowing of your skin or eyes; difficult breathing; swelling of your face, lips, tongue, or throat.
Report any new or worsening symptoms to your doctor, such as: sudden mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), depressed, or have thoughts about suicide or hurting yourself.
Call your doctor at once if you have:
eye pain or redness or any changes in your vision;
decreased sweating, feeling very hot;
signs of metabolic acidosis - confusion, vomiting, lack of energy, irregular heartbeats;
symptoms of a blood cell disorder - fever, chills, body aches, flu symptoms, sores in your mouth and throat;
symptoms of a kidney stone - severe pain in your stomach or lower back, blood in your urine;
increased or worsening seizures;
the first sign of any skin rash, no matter how mild; or
severe skin reaction - fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.
Common Zonegran side effects may include:
drowsiness, dizziness;
problems with memory or concentration;
feeling agitated or irritable;
loss of coordination, trouble walking; or
loss of appetite.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Zonegran side effects (more detail)
