ALLOPURINOL

(Zyloprim)

Standard Prescription

allopurinol __mg PO ___(frequency) (__mg/kg/24 hr)

Dosages

10 mg/kg/dose PO once daily or 5 mg/kg/dose PO BID if dose is > 300 mg.

Maximum: 800 mg/24 hr.

Mechanism of Action

Xanthine oxidase inhibitor.

Forms Supplied

tablet: 100 mg, 200 mg, 300 mg

suspension (BCCH): 20 mg/mL

Comments

Decrease dose in renal impairment.

Allopurinol is metabolized to an active metabolite with a long half-life (18 hr).

Allopurinol is the preferred agent in patients with low risk or intermediate of tumor lysis syndrome.

Onset of action ( i.e. decrease in uric acid levels) is 24-48 hours.

It is not necessary to give allopurinol while treating with rasburicase.

References

44, 116

Last Edited

2021-11-08 05:29:35