Can I take Hydralazine 10mg PRN for high blood pressure if it spikes over 150/90 as a PRN medication? I currently take 5mg of Benicar (olmesartan) 2x daily.

See below. You should consult your doctor regarding your medications. Unsure what time of the day your BP is running high. There's no harm taking it as needed but you should definitely get an evaluation before making any changes to your medical regimen. .