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ritonavir (Norvir)

Type of Drug: Pharmacokinetic Enhancer; Protease Inhibitor

A pharmacokinetic enhancer "boosts" certain other drugs by increasing their levels in the body and slowing their elimination.

Norvir was originally developed as a protease inhibitor but is no longer used in that way. Instead, "low-dose" Norvir (usually 100 mg) is often used with each dose of certain other HIV medications to boost their levels.

100 mg tablet

  • Norvir 100 tablet


100 mg capsule

  • Norvir 100 capsule


Notes on taking this medication

  • Used as a booster of other protease inhibitors; must be taken with one of these
  • Should take with food
  • Norvir interacts with many other drugs; persons using Norvir with those drugs may need an adjustment to their dose of Norvir or the other drugs; consult your medical provider

Possible side effects

  • Many side effects including nausea; vomiting; diarrhea; loss of appetite; stomach discomfort
  • Tingling and numbness around the mouth
  • Liver inflammation and increased liver enzyme levels
  • Elevations in cholesterol and triglycerides
  • Elevated blood sugar
  • Abnormal accumulation of body fat

See accompanying chart: Tips for Common Side Effects

My doctor's instructions

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