Dosage & Drug Interaction
Dosing With TOPAMAX
The rule with TOPAMAX is to "start low and go slow." That is, your healthcare professional will adjust your medication. You'll start with a low dose and then slowly increase the amount of TOPAMAX you take until you reach the dosage that works best for you. Like many other medications, TOPAMAX needs time to build up to the right level in your bloodstream before it is completely effective, so remember to be patient.
Your healthcare professional will determine your starting dose and when to make adjustments to your dose.
Be patient. TOPAMAX can take time to work.
Although you'll be taking TOPAMAX every day, it may take some time to work. In clinical studies, TOPAMAX was proven to help reduce the frequency of migraines. Some patients experienced fewer migraines after 1 month of treatment; however, it may take 2 to 3 months to realize the full benefit of TOPAMAX. That's why it's so important to continue to take your medication every day to give it the best chance to work. Back to top
What if I miss a dose?
If you miss a single dose of TOPAMAX, take it as soon as you can. However, if you are within 6 hours of taking your next scheduled dose, wait until then to take your usual dose of TOPAMAX, and skip the missed dose. Do not double your dose. If you have missed more than one dose, you should call your healthcare professional for advice. Back to top
TOPAMAX Dosing Details:
TOPAMAX can be taken with or without food.
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Drug interaction
Before starting any new medication, tell your healthcare professional about all the medicines you are currently taking, including nonprescription products, food supplements, vitamins, and herbal products.
If you're taking birth control pills, be sure to tell the healthcare professional who prescribed them that you're taking TOPAMAX. There's a possibility that birth control pills may be made less effective by TOPAMAX. Be sure to report any changes in bleeding patterns to your healthcare professional. Back to top

