Topamax Dosage

The recommended Topamax dosage for the prevention of migraines is 50 mg twice a day. When using the drug by itself to treat epilepsy, the suggested dose is 200 mg twice daily. When using the drug in addition to other epilepsy medications, the dosage of Topamax can range from 100 mg to 200 mg twice per day.

An Introduction to Your Topamax Dosage

The dose of Topamax® (topiramate) your healthcare provider recommends will vary, depending on a number of factors, including:
  • Your age
  • The medical condition being treated
  • Other medical conditions you may have
  • Other medications you may be taking.
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.

Dosage of Topamax for Migraines

The recommended dose of Topamax for migraine prevention is 50 mg twice daily. People are often recommended to start at a lower dose and slowly work up to Topamax 50 mg twice daily. The manufacturer recommends the following way to increase the dose:
  • First week -- 25 mg once daily in the evening
  • Second week -- 25 mg twice daily
  • Third week -- 25 mg in the morning and 50 mg in the evening
  • Fourth week -- 50 mg twice daily.

Topamax Dose for Epilepsy (Monotherapy)

The recommended Topamax dosage for epilepsy as monotherapy (used alone) for adults and children age 10 and up is 200 mg twice daily. The manufacturer recommends slowly increasing the dose as follows:
  • First week -- 25 mg twice daily
  • Second week -- 50 mg twice daily
  • Third week -- 75 mg twice daily
  • Fourth week -- 100 mg twice daily
  • Fifth week -- 150 mg twice daily
  • Sixth week -- 200 mg twice daily.


For children 2 to 10 years of age, your child's healthcare provider will calculate an appropriate dosage based on your child's weight.


Know the Signs - Concussion Safety

Information on Topamax

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