CLINICAL USE

Antifungal agent:Fungal infections of the skin and nails

DOSE IN NORMAL RENAL FUNCTION

250 mg dailyTopical: apply once or twice daily

PHARMACOKINETICS

  • Molecular weight &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :291.4; (327.9 as hydrochloride)
  • %Protein binding &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :99
  • %Excreted unchanged in urine &nbsp &nbsp : 0
  • Volume of distribution (L/kg) &nbsp &nbsp &nbsp :6–111, 2
  • half-life – normal/ESRD (hrs)&nbsp &nbsp &nbsp :17–36/Increased

    DOSE IN RENAL IMPAIRMENT

    GFR (mL/MIN)

  • 20 to 50 &nbsp &nbsp : 100% on alternate days
  • 10 to 20 &nbsp &nbsp : 100% on alternate days
  • <10 &nbsp &nbsp &nbsp &nbsp &nbsp : 100% on alternate days

    DOSE IN PATIENTS UNDERGOING RENAL REPLACEMENT THERAPIES

  • CAPD &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp:Unlikely to be dialysed. Dose as in GFR <10 mL/min

  • HD &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :Unlikely to be dialysed. Dose as in GFR <10 mL/min
  • HDF/high flux &nbsp :Unknown dialysability. Dose as in GFR <10 mL/min
  • CAV/VVHD &nbsp &nbsp &nbsp:Unknown dialysability. Dose as in GFR 10 to 20 mL/min

    IMPORTANT DRUG INTERACTIONS

    Potentially hazardous interactions with other drugs
  • None known

    ADMINISTRATION

    Reconstition

    Route

    Oral, topical

    Rate of Administration

    Comments

    OTHER INFORMATION

    Terbinafine is hepatically metabolised to two major metabolites, 80% of which are renally excretedLittle information is available regarding the handling of terbinafine in renal failure but clearance is reduced by 50% if GFR<50 mL/min In CKD 5 use with caution and monitor for side effects .