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  • Title: Haemodynamic, hormonal, and diuretic effects of felodipine in healthy normotensive volunteers.
    Author: Sluiter HE, Huysmans FT, Thien TA, van Lier HJ, Koene RA.
    Journal: Drugs; 1985; 29 Suppl 2():26-35. PubMed ID: 2985351.
    Abstract:
    Felodipine and placebo were infused in a double-blind, crossover study in 10 healthy normotensive volunteers. Compared with placebo, felodipine caused a significant decrease in diastolic blood pressure and forearm vascular resistance, while there was no change in systolic blood pressure. The rises in heart rate, plasma renin activity and plasma noradrenaline (norepinephrine) concentration further demonstrated the vasodilating activity of felodipine. Plasma aldosterone, adrenaline (epinephrine) and antidiuretic hormone concentrations were similar after a 90-minute infusion of felodipine or placebo. The response of plasma aldosterone levels to exogenous adenocorticotrophic hormone showed evidence of a slight blunting during felodipine infusion. Felodipine had a marked diuretic effect, probably secondary to an increase in natriuresis, which might be due to a direct tubular effect of the drug.
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