<p>Pregnancy category C. Furosemide should be cautiously used in cardiogenic shock complicated by pulmonary oedema and in the first trimester of pregnancy. Blood pressure and pulse during rapid diuresis should be monitored. Caution should be observed in patients liable to electrolyte deficiency. In case of nursing mother, furosemide may inhibit lactation or may pass into breast milk. In that case it should be used with caution.</p>