What it does: Treats chronic hepatitis C genotype 1 infection
Dosage: Four 200-mg capsules, three times daily, with food, in combination with ribivarin (marketed under brand names Copegus, Rebetol, and others) and peginterferon alfa (PegIntron or Pegasys)
Drug interactions, precautions, & recommendations: Do not take if you are pregnant or your partner is, or if you or your partner plan to become pregnant, as birth defects or fetal death can result. Do not take if taking antiseizure medications, including Tegretol, Dilantin, or drugs containing phenobarbital; certain types of birth control pills; ergot-containing medications such as Cafergot, Minergot, Halcion, Saint-John’s-wort, and others. Use with caution if taking the HIV drugs Reyataz, Norvir, Kaletra, Sustiva, Atripla, Intelence, or Prezista. Use with caution with Biaxin, Mycobutin, Vfend, Sporanox, Noxafil, or Nizoral.
Side effects: Most serious: several allergic reaction, low blood cell counts. Other: fatigue, headache, nausea