Prescription Drug Index

PRIMIDONE

This is a Generic Prescription Drug

Primidone

Pronounced: pri-mi-done

Other Name(s): Mysoline

Brand Name Drugs

Generic Drugs

Primidone is used to treat epileptic and other seizures. It can be used alone or with other anticonvulsant drugs. It is chemically similar to barbiturates.

ADULTS

For people 8 years of age and older who have not been treated before the recommended dosing of Primidone is as follows using either 50-milligram or scored 250-milligram Primidone tablets:

Days 1 to 3: 100 to 125 milligrams at bedtime

Days 4 to 6: 100 to 125 milligrams 2 times a day

Days 7 to 9: 100 to 125 milligrams 3 times a day

Day 10 to maintenance: 250 milligrams 3 times a day

For most adults and children 8 years of age and over the usual maintenance dosage is 250 milligrams 3 or 4 times a day. If you need more your doctor may increase the dose to five or six 250-milligram tablets. You should not take more than 500 milligrams 4 times a day (2000 milligrams or 2 grams).

In patients already receiving other anticonvulsants the usual starting dose of Primidone is 100 to 125 milligrams at bedtime; your doctor may gradually increase this dose to a maintenance level as the other drug is gradually decreased. Your doctor may either find a working level for the combination or withdraw the other medication completely. When Primidone is to be used as a single drug it may take at least 2 weeks to make the transition from two drugs to one.

CHILDREN UNDER AGE 8

Days 1 to 3: 50 milligrams at bedtime

Days 4 to 6: 50 milligrams 2 times a day

Days 7 to 9: 100 milligrams 2 times a day

Day 10 to maintenance: 125 milligrams 3 times a day to 250 milligrams 3 times day

The usual maintenance dosage is 125 to 250 milligrams 3 times daily or 10 to 25 milligrams per 2.2 pounds of body weight per day divided into smaller doses.

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Note:

The content in this section is provided for informational purposes only. This information regarding the following Canadian drugs is not intended to replace or act as a substitute for information or advice provided by your physician. You should always consult a physician before beginning a new medication. Moreover, prescription drugs should only be obtained with a doctor's prescription.

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