A patient has received a prescription for prazosin (Minipress)to reduce urinary obstruction due to benign prostatic hyperplasia (BPH).What important information about this medication should the nurse give this patient?

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This medication is used to relieve impaired urinary flow in men with BPH,but it also has antihypertensive effects.Because of these effects,blood pressure may be dramatically lowered,and orthostatic hypotension and lightheadedness may occur until tolerance is developed.Fluids do not need to be restricted while on this medication.The patient needs to maintain adequate fluid intake to prevent urinary tract infection and to stay hydrated.Because of the possibility of lightheadedness,the first few doses should be taken at bedtime.

A Patient Has Received a Prescription for Prazosin (Minipress)to Reduce