Invirase Dosage

Generic name: saquinavir mesylate
Dosage form: tablet, film coated; capsules

The information at is not a substitute for medical advice. ALWAYS consult your doctor or pharmacist.

INVIRASE must be used in combination with ritonavir because ritonavir significantly inhibits saquinavir's metabolism to provide increased plasma saquinavir levels.

Recommended Dose

  • INVIRASE 1000-mg twice daily (5 × 200-mg capsules or 2 × 500-mg tablets) in combination with ritonavir 100-mg twice daily.
  • Ritonavir should be taken at the same time as INVIRASE.
  • INVIRASE and ritonavir should be taken within 2 hours after a meal.
  • No additional ritonavir is recommended when INVIRASE is administered with lopinavir/ritonavir 400/100 mg twice daily.
  • Pediatric dose recommendations that are both reliably effective and below thresholds of concern for QT and PR interval prolongation could not be determined.

Administration for Patients Unable to Swallow Capsules

Open the INVIRASE capsules and place the contents into an empty container. Add 15 mL of either sugar syrup or sorbitol syrup (for patients with Type 1 diabetes or glucose intolerance) OR 3 teaspoons of jam to the contents of INVIRASE capsules that are in the container. Stir with a spoon for 30 to 60 seconds. Administer the full amount prepared for each dose. Suspensions should be at room temperature before administering.