CLINICAL USE

Treatment of chronic hepatitis B infection

DOSE IN NORMAL RENAL FUNCTION

600 mg daily

PHARMACOKINETICS

  • Molecular weight                           :242.2
  • %Protein binding                           :3.3
  • %Excreted unchanged in urine     : 42
  • Volume of distribution (L/kg)       :No data
  • half-life – normal/ESRD (hrs)      :30–53.6/Increased

    DOSE IN RENAL IMPAIRMENT

    GFR (mL/MIN)

    30–50 600 mg every 48 hours<30 600 mg every 72 hours

    DOSE IN PATIENTS UNDERGOING RENAL REPLACEMENT THERAPIES

  • CAPD                :Dialysed. 600 mg every 96 hours
  • HD                     :Dialysed. 600 mg every 96 hours
  • HDF/high flux   :Dialysed. 600 mg every 96 hours
  • CAV/VVHD      :Dialysed. Dose as in GFR<30 mL/min

    IMPORTANT DRUG INTERACTIONS

    Potentially hazardous interactions with other drugs

  • None known

    ADMINISTRATION

    Reconstition

    –

    Route

    Oral

    Rate of Administration

    –

    Comments

    –

    OTHER INFORMATION

    Dosage guidelines are from the company and have not been tested so adjust the dose according to virological response and monitor for side effectsHas been associated with myopathy and myalgia4 hours of haemodialysis removes 23% of the dose.

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