Hypertension. Adult, initial: 10 mg q.i.d for 2-4 days; then, increase to 25 mg q.i.d. for rest of first week. For second and following weeks, increase to 50 mg q.i.d. Maintenance: individualized to lowest effective dose; maximum daily dose should not exceed 300 mg. Pediatric, initial: 0.75 mg/kg/day (25 mg/m2/day) in two to four divided doses; dosage may be increased gradually up to 7.5 mg/kg/day (or 300 mg/day). Food increases the bioavailability of the drug.
• IV, IM Hypertensive crisis.
Adults, usual: 20-40 mg, repeated as necessary. BP may fall within 5-10 min, with maximum response in 10-80 min. Usually switch to PO medication in 1-2 days. Dosage should be decreased in clients with renal damage. Pediatric: 0.1-0.2 mg/kg q 4-6 hr as needed.
Eclampsia. 5-10 mg q 20 min as an IV bolus. If no effect after 20 mg, another drug should be tried.
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Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...