Toll Free
4:00am - 8:00pm (M-F)
7:00am - 3:30pm (S/S)
(Pacific Standard Time)
Home | Prescription Drugs | Zonegran

Zonegran (Zonisamide)

Drug:Zonisamide Capsule
Dosage:25 mg
Zonisamide Capsule
50 mg
Drug:Zonisamide Capsule
Dosage:100 mg


Zonisamide is an anticonvulsant used to control certain type of seizures.

Do not take zonisamide without first talking to your doctor. If you have ever had an allergic reaction to a sulfa drug such as sulfamethoxazole (Gantanol, others); sulfisoxazole (Gantrisin, others); or sulfamethoxazole-trimethoprim (Bactrim, Bactrim DS, Septra, Septra DS, Cotrim, others) - you may also have an allergic reaction to zonisamide.

Side Effects

Other, less serious side effects may be more likely to occur. Continue to take zonisamide and talk to your doctor if you experience: dizziness; mild drowsiness; loss of appetite; headache; nausea; agitation or irritability.

If you experience any of the following serious side effects, seek emergency medical attention or contact your doctor immediately:

an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives); a rash; increasing frequency or worsening of seizures; fever, sore throat, sores in your mouth, or bruising easily (may be signs of a blood problem); sudden back pain, stomach or abdominal pain, pain when urinating, bloody or dark urine (may be signs of a kidney stone); decreased sweating or a rise in body temperature (especially in those under 17 years old); depression; severe drowsiness, difficulty concentrating, or coordination problems; unusual thoughts; or speech or language problems including difficulty finding words.


Take zonisamide exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose of zonisamide with a full glass of water. Also, drink 6 to 8 glasses of water a day to help prevent the formation of kidney stones. Swallow the zonisamide capsule whole. Do not crush, chew, or break them. Store zonisamide at room temperature away from moisture and heat Zonisamide can be taken with or without food.

It is important to take zonisamide regularly to get the most benefit. Do not stop taking zonisamide without first talking to your doctor, even if you feel better. It is important to continue taking zonisamide to prevent the seizures from recurring. Stopping zonisamide suddenly may result in increased seizure frequency. If the medication needs to be stopped, your doctor may need to lower the dosage gradually.

If treatment with zonisamide is stopped for any reason, contact your doctor before restarting the medication. A lower dose may be needed to prevent side effects from occurring.

The generic alternative is not manufactured by the company that makes the brand product.

The content on this page has been supplied to canadianpharmacyking by an independent third party contracted to provide information for our website. canadianpharmacyking relies on these third parties to create and maintain this information and cannot guarantee the medical efficacy, accuracy or reliability of the information that has been provided to us. If you require any advice or information about the drugs on this page, a medical condition or treatment advice, you should always speak to a health professional. Please note that not all products, including any referenced in this page, are shipped by our affiliated Canadian Pharmacy. We affiliate with other dispensaries that ship product to our customers from the following jurisdictions: Canada, Singapore, New Zealand, Turkey, Mauritius, India, and United Kingdom. The items in your order maybe shipped from any of the above jurisdictions. The products are sourced from various countries as well as those listed above. Rest assured, we only affiliate with our authorized dispensaries that procure product through reliable sources.