Vasodilator 10-20 mg tid-qid. Arresting premature labor Initially 200-500 mcg/min IV infusion. Once labor has been arrested, 10 mg every 3-8 hr IM. Prophylaxis 30-90 mg daily.
Should not be given immediately post-partum, nor should it be used for premature labor if there is infection. Risk of pulmonary edema in women being treated for premature labor.