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In the U.S.-
Zonisamide ( zoh-NIS-a-mide) is used to control some kinds of seizures in the treatment of epilepsy.
This medicine is available only with your doctor's prescription, in the following dosage form:
Before Using This Medicine
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For zonisamide, the following should be considered:
Allergies- Tell your doctor if you have ever had any unusual or allergic reaction to zonisamide, or to sulfonamide antibiotics (for example, Bactrim® or Septra®). Also tell your doctor and pharmacist if you are allergic to any other substances, such as foods, preservatives, or dyes.
Pregnancy- Zonisamide has not been studied in pregnant women. However, studies in animals have shown that zonisamide causes birth defects and other serious problems with the pregnancy. Before taking this medicine, make sure your doctor knows if you are pregnant or if you may become pregnant.
Breast-feeding- Zonisamide has been shown to pass into breast milk. However, it is not known whether this medicine causes problems in nursing babies. Mothers who are taking zonisamide and who wish to breast-feed should discuss this with their doctor.
Children- Safety and efficacy have not been established in children who are under 16 years of age and is not approved for use.Studies in children have shown that some children are at higher risk for oligohidrosis (decreased sweating) and hyperthermia (unusually high body temperature), especially in warm or hot weather. This can sometimes result in heat stroke and hospitalization.
Older adults- Many medicines have not been studied specifically in older people. Therefore, it may not be known whether they work exactly the same way they do in younger adults. Although there is no specific information comparing use of zonisamide in the elderly with use in other age groups, this medicine is not expected to cause different side effects or problems in older people than it does in younger adults.
Other medicines- Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking zonisamide, it is especially important that your doctor and pharmacist know if you are taking any of the following:
Other medical problems- The presence of other medical problems may affect the use of zonisamide. Make sure you tell your doctor if you have any other medical problems, especially:
Proper Use of This Medicine
Take this medicine only as directed by your doctor to help your condition as much as possible. Do not take more or less of it, and do not take it more or less often than your doctor ordered.
Zonisamide may be taken with or without food, on a full or empty stomach. Swallow capsule whole. Do not break or crush.
The dose of zonisamide will be different for different patients. Follow your doctor's orders or the directions on the label . The following information includes only the average doses of zonisamide. If your dose is different, do not change it unless your doctor tells you to do so.
The number of capsules that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are taking zonisamide
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
To store this medicine:
Precautions While Using This Medicine
It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly, and to check for unwanted effects.
If your condition does not improve within a few weeks or if it becomes worse, check with your doctor.
This medicine may cause some people to become drowsy, dizzy, or less alert than they are normally. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert .
This medicine will add to the effects of alcohol and other CNS depressants (medicines that make you drowsy or less alert). Some examples of CNS depressants are antihistamines or medicine for hay fever, other allergies, or colds; prescription pain medicines, or sleep medicines. Do not take other medicines unless they have been discussed with your doctor. This especially includes nonprescription medicines for appetite control, asthma, colds, cough, hay fever, or sinus problems.
Contact your doctor immediately if you develop skin rash, experience fever, sore throat, oral ulcers, easy bruising, or worsening of seizures.
These medicines may make you sweat less, causing your body temperature to increase. Use extra care not to become overheated during exercise or hot weather while you are taking this medicine , since overheating may result in heat stroke. Also, hot baths or saunas may make you dizzy or faint while you are taking this medicine.
Use effective birth control methods to prevent pregnancy if you are sexually active and able to become pregnant.
Do not stop taking zonisamide without first checking with your doctor . Stopping the medicine suddenly may cause your seizures to return or to occur more often. Your doctor may want you to gradually reduce the amount you are taking before stopping completely.
It is important that you drink plenty of fluids every day during therapy with zonisamide to help prevent kidney stones from forming.
Side Effects of This Medicine
Side Effects of This Medicine
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome.
Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT