In a double-blind study the effect of a high dosage of O-(beta-hydroxyethyl)-rutosides (HR) was tested in women taking oral contraceptives and suffering from venous insufficiency of the lower limbs. Ten patients were treated for 28 days with HR (3 g/day) and ten with a placebo. In basal conditions and after therapy, the symptoms of venous disorders and the venous function, by means of strain gauge plethysmography, was evaluated in both groups. The results showed an increase of venous capacitance and a reduction of venous tone in the subjects treated including those without symptoms in the lower limbs. The HR treatment resulted in a significant improvement of the venous function parameters and of the symptoms in lower limbs.
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