FOMEPIZOLE

(Antizol)

Standard Prescription

fomepizole__mg IV x 1 dose (__mg/kg/dose) then
fomepizole__mg IV Q   H (__mg/kg/dose) x _ doses then
fomepizole__mg IV Q   H (__mg/kg/dose)

Dosages

Children: (no specific pediatric guidelines)
Contact BC Drug and Poison Center

Initial:  15 mg/kg/dose IV over 30 min
Subsequent doses:  10 mg/kg/dose IV Q12H until methanol level is below 6 mmol/L or ethylene glycol level is below 3 mmol/L or osmole gap is less than 10

If hemodialysis is required, give 10 mg/kg IV 4 hours after start of hemodialysis and 10 mg/kg IV immediately following completion of hemodialysis

Maximum: 1500 mg/dose

Mechanism of Action

Potent alcohol dehydrogenase inhibitor to treat methanol and ethylene glycol toxic ingestions and will impair the elimination of ethanol if co-ingested.

Forms Supplied

Injection: 1.5 g/1.5 mL vial
(1000 mg/mL)

Comments

Used to treat methanol and ethylene glycol  toxic ingestions.

Fomepizole is a potent alcohol dehydrogenase inhibitor and will impair the elimination of ethanol if co-ingested.

May cause bradycardia, tachycardia, hypotension, headache, dizziness, nausea, bad taste/smell. Seizures and fever have been reported.

Renal elimination; increased toxicity in renal failure; no dosage recommendations available for renal impairment.

References

1, 4, 19, 44

Last Edited

2021-12-07 20:56:50