Both of these actions help to lower blood pressure. In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. Also tell your health care professional if you are allergic to any other substance, such as foods, preservatives, or dyes. The combination of prazosin and polythiazide has not been shown to cause birth defects.
Prazosin passes into breast milk in small amounts.
However, prazosin and polythiazide combination has not been reported to cause problems in nursing babies. Although there is no specific information about the use of this medicine in children, it is not expected to cause different side effects or problems in children than it does in adults. However, extra caution may be necessary in infants with jaundice, because these medicines can make the condition worse. In addition, this medicine may reduce tolerance to cold temperatures in elderly patients. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur.