Griseofulvin

CLINICAL USE

Antifungal agent:Dermatophyte infections of the skin, scalp, hair and nails

DOSE IN NORMAL RENAL FUNCTION

500 mg daily, in divided doses or as a single dose, in severe infection dose may be doubled

PHARMACOKINETICS

Molecular weight &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :352.8

%Protein binding &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :84

%Excreted unchanged in urine &nbsp &nbsp : <1

Volume of distribution (L/kg) &nbsp &nbsp &nbsp :1.2–1.41

half-life – normal/ESRD (hrs)&nbsp &nbsp &nbsp :9–24/20

DOSE IN RENAL IMPAIRMENT

GFR (mL/MIN)

20 to 50 &nbsp &nbsp : Dose as in normal renal function

10 to 20 &nbsp &nbsp : Dose as in normal renal function

<10 &nbsp &nbsp &nbsp &nbsp &nbsp : Dose as in normal renal function

DOSE IN PATIENTS UNDERGOING RENAL REPLACEMENT THERAPIES

CAPD &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp:Not dialysed. Dose as in normal renal function

HD &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp :Not dialysed. Dose as in normal renal function

HDF/high flux &nbsp :Not dialysed. Dose as in normal renal function

CAV/VVHD &nbsp &nbsp &nbsp:Not dialysed. Dose as in normal renal function

IMPORTANT DRUG INTERACTIONS

Potentially hazardous interactions with other drugs

Anticoagulants: metabolism of coumarins accelerated (reduced anticoagulant effect)

Ciclosporin: griseofulvin possibly reduces ciclosporin concentration (two reports of such an interaction in literature)Oestrogens and progestogens: metabolism of oral contraceptives accelerated (reduced contraceptive effect)

ADMINISTRATION

Reconstition

–

Route

Oral

Rate of Administration

–

Comments

–

OTHER INFORMATION

Use with extreme caution in patients with SLE.

Tags: post-by-auto-php