Dosing & Administration
Adult Dose
10-20 mg IV every 4-6 hours PRN. PO: 25-100 mg QID.
Pediatric Dose
0.1-0.2 mg/kg IV every 4-6 hours.
Renal Adjustment
Increase dosing interval in severe impairment.
Hepatic Adjustment
No adjustment necessary.
Safety & Special Populations
Pregnancy Category
C (Widely used in pregnancy for pre-eclampsia).
Lactation Safety
Compatible.
Contraindications & Adverse Effects
Contraindications
- Coronary artery disease (relative)
- Mitral valvular rheumatic heart disease
Common Adverse Effects
- Drug-induced Lupus (SLE)
- Reflex tachycardia
- Headache