The aim of this study was to evaluate the effect of lacidipine and nifedipine on lower limb veins. Forty hypertensive patients, aged 30-50 years, with no deep venous thrombosis, venous insufficiency, or hypothyroidism underwent double-blind treatment with placebo (I week), lacidipine 4 mg once daily (1 week), and slowrelease nifedipine 20 mg twice daily (1 week) in randomized sequence. Echo-color Doppler examination of su perficial, deep, communicating, and perforating veins of the legs was performed. The results showed venous insufficiency and hypertension after 1-week administration of lacidipine (5 and 15%, respectively) and nifedipine (10 and 25%, respectively) and only two cases (5%) of venous hypertension during placebo administration. Lower limb edema was observed in two patients (5%) during treatment with nifedipine slow-release (SR). The hemodynamic effects of lacidipine and nifedipine were reversible but may contribute to the mechanism of lower limb edema.