Isoxsuprine may cause transient nausea, vomiting, flushing, tachycardia, rashes, gastro-intestinal disturbances and maternal pulmonary edema. In few cases, mainly in hypertensive patients, parenteral administration of Isoxsuprine (Duvadilan) may lead to transitory fall in blood pressure. A change over to oral administration or reduction in dosage will usually avoid this effect.