Isoxsuprine hydrochloride

• A beta-adrenoreceptor antagonist with beta-adrenoreceptor stimulating properties.

• A tocolytic agent used in both preterm labor and risk of abortion.

• Acts directly on vascular smooth muscle; causes cardiac stimulation and uterine relaxation.

• Studies favor the effectiveness of isoxsuprine in prolonging pregnancy in women at risk of abortion or premature delivery.