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Zonegran (active ingredient: zonisamide) is a prescription antiseizure medication used to help control focal seizures in people with epilepsy. Focal seizures begin in one specific area of the brain and may affect movement, awareness, sensation, behaviour, or emotions.
Zonegran is commonly used as adjunctive therapy. This means it is taken together with one or more other antiseizure medications when those medicines do not provide enough seizure control on their own.
Depending on local approval and the treatment plan, Zonegran may be prescribed for adults and children aged 6 years and older.
Epilepsy is a neurological condition that causes repeated seizures. Seizures occur when groups of brain cells produce sudden, excessive, or disorganised electrical activity.
The symptoms of a seizure depend on the area of the brain involved and how far the abnormal electrical activity spreads. Some seizures are brief and cause only mild symptoms, while others may significantly affect awareness and movement.
Focal seizures, previously called partial seizures, begin in one side or region of the brain.
A focal seizure may occur with or without a change in awareness.
Focal Aware Seizures
During a focal aware seizure, the person remains awake and aware of what is happening.
Possible symptoms may include:
Focal Impaired Awareness Seizures
During a focal impaired awareness seizure, the person’s awareness becomes reduced or altered.
Possible symptoms may include:
A focal seizure may sometimes spread to both sides of the brain and develop into a bilateral tonic-clonic seizure. This can cause loss of consciousness, body stiffening, and rhythmic jerking movements.
Zonegran belongs to a group of medications called anticonvulsants or antiepileptic drugs. It helps reduce abnormal electrical activity in the brain.
The medication appears to work through several pathways. It blocks certain sodium and calcium channels that nerve cells use to transmit electrical signals. It may also affect chemical messengers involved in balancing excitatory and calming activity in the brain.
By reducing excessive nerve firing, Zonegran can make seizures less likely to start or spread.
Zonegran may help:
The response to treatment varies. Some people may experience a major reduction in seizures, while others may continue to have occasional episodes.
Zonegran is often added to an existing epilepsy treatment plan. A healthcare provider may recommend it when another antiseizure medication is not controlling seizures adequately or when a combination of medicines is expected to work better.
The medications must be balanced carefully because combining antiseizure drugs can increase the risk of side effects such as drowsiness, dizziness, difficulty concentrating, or problems with coordination.
Do not change the dose of Zonegran or another seizure medication without medical guidance.
The dose of Zonegran is chosen individually. A healthcare provider may consider:
Treatment usually starts with a low dose. The dose may then be increased gradually to improve seizure control while limiting side effects.
Zonegran must be taken regularly to maintain a steady amount of medication in the body. Missing doses may increase the risk of breakthrough seizures.
Take each dose at the same time or times every day. Continue taking the medication even if you have not had a seizure for a long time.
Zonegran controls seizures while it is being taken, but it does not cure epilepsy.
Do not stop Zonegran suddenly unless a healthcare provider instructs you to do so.
Abrupt discontinuation may cause seizures to return, become more frequent, or become more severe. In some cases, it may increase the risk of prolonged seizures or status epilepticus, which is a medical emergency.
A healthcare provider will usually reduce the dose gradually when treatment needs to be stopped.
A healthcare provider may monitor:
Keeping a seizure diary may help track how often seizures occur, how long they last, and whether any triggers or side effects are present.
Zonegran may be one part of a broader epilepsy treatment plan. Other parts may include regular medical follow-up, adequate sleep, avoiding known seizure triggers, taking medications consistently, and following safety precautions.
Contact a healthcare provider if seizures become more frequent, change in pattern, last longer than usual, or occur with serious side effects.
Take Zonegran exactly as prescribed by your healthcare provider. The medication is usually taken once or twice daily, depending on your prescribed dose and treatment plan.
Zonegran may be taken with or without food. Try to take it the same way each day and at approximately the same time or times. A regular schedule helps maintain a steady amount of medication in your body and supports consistent seizure control.
Swallow the capsule whole with a glass of water. Do not chew, crush, open, or break the capsule unless your healthcare provider specifically tells you how to take it differently.
Zonegran must be taken regularly to work effectively. Missing doses can cause the medication level in your body to fall, which may increase the risk of breakthrough seizures.
Helpful ways to remember your doses include using a pill organiser, setting a phone alarm, or connecting the medication with a regular daily activity.
Continue taking Zonegran even when you feel well or have not experienced a seizure for a long time. The absence of seizures may mean the medication is working.
For many adults, the usual starting dose is 100 mg once daily.
Starting with a lower dose gives the body time to adjust and may reduce side effects such as drowsiness, dizziness, difficulty concentrating, nausea, or loss of appetite.
The starting dose may be lower in some people, including those with kidney or liver problems, older adults, or people taking other medications that cause drowsiness.
A healthcare provider may increase the dose gradually based on seizure control and side effects.
A common dosing schedule may include increasing the dose from 100 mg daily to 200 mg daily after approximately two weeks. Additional increases may be made slowly until the most effective and tolerable dose is reached.
Increasing the dose too quickly may raise the risk of side effects. Do not increase the amount or take extra capsules without medical advice.
Many adults take between 300 mg and 400 mg of Zonegran per day as a maintenance dose.
The total daily dose may be taken once daily or divided into two doses, depending on your healthcare provider’s instructions.
The most appropriate maintenance dose is the lowest dose that provides adequate seizure control with manageable side effects.
The total dose should generally not exceed 600 mg per day.
Higher doses may increase the risk of side effects and may not provide additional seizure control. Never take more than the prescribed amount.
The correct Zonegran dose varies from person to person. A healthcare provider may consider:
Children may require weight-based dosing and closer monitoring. The dose may also need to change as a child grows.
Zonegran is removed from the body partly through the kidneys and is processed by the liver.
People with kidney or liver impairment may clear the medication more slowly. A healthcare provider may prescribe a lower dose, increase it more gradually, or perform additional blood tests.
Tell your healthcare provider if you have kidney disease, liver disease, kidney stones, or reduced urination.
Drink enough water while taking Zonegran unless a healthcare provider has told you to limit fluids.
Zonegran may increase the risk of kidney stones, especially in people who are dehydrated or have previously had kidney stones. Adequate fluid intake may help reduce this risk.
Contact a healthcare provider if you develop severe pain in the back or side, blood in the urine, painful urination, or difficulty passing urine.
Take a missed dose as soon as you remember. However, skip it if it is almost time for your next scheduled dose.
Continue with your regular dosing schedule. Do not take two doses at the same time or take extra medication to make up for the missed dose.
Contact a healthcare provider if you miss several doses, because you may need instructions on how to restart treatment safely.
Do not stop taking Zonegran suddenly unless emergency medical care requires it.
Abrupt discontinuation can cause seizures to return, become more frequent, or become more severe. It may also increase the risk of status epilepticus, a prolonged or repeated seizure that requires emergency treatment.
When treatment must be stopped, a healthcare provider will usually reduce the dose gradually.
Do not stop another antiseizure medication when starting Zonegran unless your healthcare provider provides a specific schedule.
When changing treatments, one medication may need to be reduced slowly while Zonegran is increased. This helps maintain seizure control and reduces the risk of withdrawal-related seizures.
A healthcare provider may monitor your response during treatment by checking:
Keeping a seizure diary can help your healthcare provider decide whether the dose needs to be adjusted.
Drowsiness, dizziness, slowed thinking, or coordination problems may be more noticeable when treatment begins or after the dose is increased.
Avoid driving, operating machinery, working at heights, or performing activities that require full alertness until you know how Zonegran affects you.
Alcohol and other sedating medications may make these effects worse.
Contact a healthcare provider if seizures become more frequent, last longer than usual, or change in pattern.
You should also seek medical advice if you develop severe drowsiness, confusion, reduced sweating, overheating, persistent vomiting, severe abdominal or back pain, unusual weakness, or difficulty urinating.
Take Zonegran exactly as prescribed and attend regular follow-up appointments to ensure that treatment remains safe and effective.
Zonegran (Zonisamide) is available in the following forms and strength:
Avoid drinking alcohol while taking Zonegran. Alcohol may increase side effects such as drowsiness, dizziness, poor coordination, and difficulty concentrating.
Use caution when starting Zonegran, stopping treatment, or changing the dose. Dose adjustments should only be made by a healthcare provider.
Tell your healthcare provider about all prescription medications, nonprescription products, vitamins, and supplements you use. Zonegran may interact with other medicines and increase the risk of side effects.
Zonegran may cause drowsiness, dizziness, slowed thinking, or difficulty concentrating.
Avoid driving, operating heavy machinery, or performing activities that require alertness until you know how the medication affects you.
Zonegran may cause mood or behaviour changes in some people. These may include depression, irritability, anxiety, unusual agitation, or sudden changes in mood.
Contact a healthcare provider promptly if you or someone close to you notices new or worsening mood changes during treatment.
Antiseizure medications, including Zonegran, may increase the risk of suicidal thoughts or behaviour in a small number of people.
Seek immediate medical help if you develop thoughts of self-harm, feel unable to stay safe, or experience severe changes in mood or behaviour.
The safety of Zonegran during pregnancy is not fully established. Tell your healthcare provider if you are pregnant, planning to become pregnant, or think you may be pregnant.
Do not stop taking Zonegran suddenly during pregnancy, as uncontrolled seizures may also pose serious risks. A healthcare provider will review the benefits and possible risks and determine the safest treatment plan.
Zonegran may cause an allergic reaction. The risk may be higher in people who are allergic to sulfonamide medicines.
Seek immediate medical care if you develop:
Zonegran may increase the risk of kidney stones. The risk may be higher if you have previously had kidney stones, do not drink enough fluids, or take other medications that promote stone formation.
Drink enough water during treatment unless a healthcare provider has advised you to limit fluids.
Contact a healthcare provider if you develop severe pain in your back, side, or abdomen, painful urination, blood in your urine, or difficulty passing urine.
The exact way Zonegran prevents seizures is not fully understood. It is believed to reduce excessive and abnormal electrical activity in the brain. Zonegran affects certain channels and chemical signals used by brain cells. This helps stabilise nerve activity and makes seizures less likely to begin or spread.
The safety of Zonegran during pregnancy is not fully established. Tell your healthcare provider if you are pregnant, planning to become pregnant, or think you may be pregnant. Do not stop taking Zonegran suddenly without medical advice. Uncontrolled seizures can also pose serious risks during pregnancy. A healthcare provider will weigh the benefits of treatment against the possible risks and recommend the safest plan.
No. Avoid alcohol while taking Zonegran. Alcohol may increase drowsiness, dizziness, slowed thinking, poor coordination, and difficulty concentrating. These effects may increase the risk of falls, accidents, or injuries.
Zonegran begins affecting the body after treatment starts, but it may take several weeks to notice its full effect on seizure control. Take the medication regularly and at the same time each day. Do not change the dose or stop treatment if you do not notice immediate improvement. A healthcare provider may need to increase the dose gradually before the full benefit is reached.
| Generic name: | Zonisamide |
|---|---|
| Formulation: | Capsule, Tablet |
| Strength(s): | 25mg, 50mg, 100mg |
| Quantities Available: | 56, 100, 112, 200 |
Our online Canadian Pharmacy is known for high standards of quality, safety, and efficiency when it comes to medications.
Our pharmacy offers lower prices on prescription drugs compared to traditional pharmacies.
When ordering Zonegran (zonisamide) from a Canadian pharmacy, you can typically purchase up to a 90-day supply at one time, which is common for prescription medications to ensure adequate management of chronic conditions without frequent refills.
Here’s what you need to know:
Dosage and Quantity: Zonegran is commonly prescribed in dosage of 100 mg, taken once or twice daily, depending on the patient’s specific treatment plan. For example, if your prescribed dose is 200 mg per day taken in two divided doses, then for a 90-day supply, you would order 180 capsules (90 days x 2 capsules per day).
Yes, we sell zonisamide at our pharmacy, and you can enjoy low prices. However, to purchase zonisamide, you will need a valid prescription from your healthcare provider. We require this to dispense the medication safely and appropriately. You can provide your prescription by mailing, faxing, or uploading it through your online account.
Yes, we ship Zonegran (zonisamide) to both the United States and Puerto Rico.
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Online Pharmacies Canada has provided information from third parties intended to increase awareness and does not contain all the information about Zonegran (Zonisamide). Talk to your doctor or other qualified medical practitioners for medical attention or advice, or if you have any concerns about Zonegran (Zonisamide).
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