for this purpose , in a group of 11 patients with essential hypertension we have compared the blood pressure lowering effects of a single oral dose of nifedipine before ( 100 mmol na+/day and 40 mmol k+/day ) and after sodium depletion ( 20 mmol na+/day and 40 mmol k+/day : each period was of 6-8 day duration ) .
C0020649
blood pressure lowering
C0028066
nifedipine