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Drug Dosing Toolkit: Viracept

for Veterans and the Public

Viracept (nelfinavir)

Type of Drug: Protease Inhibitor
Once HIV has infected a cell and made copies of itself, it uses an enzyme called protease to process itself correctly so it can be released from the cell to infect other cells. Protease inhibitors work by blocking that enzyme.

Approved adult dosing

two 625 mg tablets Viracept two times a day

  • Morning
    Viracept 625mgViracept 625mg

    Viracept 625 mg

  • Evening
    Viracept 625mgViracept 625mg

    Viracept 625 mg

five 250 mg tablets Viracept two times a day

  • Morning
    Viracept 250mgViracept 250mgViracept 250mgViracept 250mgViracept 250mg

    Viracept 250 mg

  • Evening
    Viracept 250mgViracept 250mgViracept 250mgViracept 250mgViracept 250mg

    Viracept 250 mg

three 250 mg tablets Viracept three times a day

  • Morning
    Viracept 250mgViracept 250mgViracept 250mg

    Viracept 250 mg

  • Noon
    Viracept 250mgViracept 250mgViracept 250mg

    Viracept 250 mg

  • Evening
    Viracept 250mgViracept 250mgViracept 250mg

    Viracept 250 mg

Notes on taking this medication

  • Must take with a meal
  • Viracept interacts with certain other drugs; persons using Viracept with those drugs may need an adjustment to their dose of Viracept or the other drugs; consult your medical provider

Side effects

  • Diarrhea
  • Nausea; vomiting
  • Liver inflammation and increased liver enzyme levels
  • Elevations in cholesterol and triglycerides
  • Abnormal accumulation of body fat

See accompanying chart: Tips for Common Side Effects

My doctor's instructions

Disclaimer: This information is not meant to substitute for advice from your medical provider or pharmacist. If you have any questions about your medication dosing, talk to your medical provider or pharmacist.