SPIRONOLACTONE

(Aldactone)

Standard Prescription

spironolactone__mg PO Q__H

Dosages

Children:
1-1.5 mg/kg/dose PO once daily or BID
Max Single dose: 50 mg

Adults:
25-50 mg PO q12-24H
Max adult dose 100 mg /day

Mechanism of Action

Potassium-sparing diuretic; selective aldosterone antagonist

Forms Supplied

tablet: 25 mg, 100 mg
oral suspension (BCCH): 5 mg/mL

Comments

Watch for hyperkalemia especially when combined with potassium supplementation or ACE inhibitors.

Avoid use in severe renal failure (Creatinine Clearance <10 mL/min).

Full diuretic and potassium-sparing effects occur several days into therapy due to accumulation of the active metabolite canrenone.

References

29, 141, 192, 193

Last Edited

2019-08-26 10:58:28