to evaluate the acute ( 2.5 hours ) and chronic ( 2 weeks ) effects of celiprolol ( 400 mg once a day ) on plasma renin , aldosterone , norepinephrine and epinephrine , 20 patients with mild to moderate primary hypertension were studied in a double-blind placebo-controlled crossover trial .
C0028351
norepinephrine
C0014563
epinephrine