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Adjusting dosages

Jul 1, 1997

I have read that you should increase the dosage of viracept if you are also on viramune. Is this a must? How much should the dosage be increased? Example if you take 3, three times a day for a total of 750 mg. How much viracept exactly should you take?

Response from Dr. Cohen

It's not a must. We know that Viramune affects both Viracept and Crixivan similarly: it lowers their levels by about 25% (which is not all that much, as these things go). The recommendation has been made to "consider" increasing the Crixivan dose from 800 mg to 1000 mg every 8 hours when it's combined with Viramune.

No one has made such a recommendation for Viracept, although many of us try increasing the dose from 750 mg to 1000 mg three times daily, using the Crixivan example as a model. However, since in the original Viracept trials people taking only 500 mg three times daily did pretty well (unless they had very high viral loads to begin with), the dose increase may not be necessary.

Viracept side effects
How strict is Viracept dosing schedule?

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