Clinical evaluation of the efficacy and safety of manidipine in hypertensive patients with renal disorders.

Hypertension is an important factor that accelerates deterioration in renal function. This study evaluated the antihypertensive effectiveness, tolerability, and safety of manidipine hydrochloride, a new dihydropyridine calcium channel antagonist. Sixteen patients (10 men and 6 women) with hypertension and renal disorders received 10 or 20 mg of manidipine once daily for 12 weeks. After 4 weeks of therapy, manidipine treatment produced significant reductions in both systolic and diastolic blood pressures to 146.9 +/- 3.2/87.1 +/- 2.1 mmHg from a baseline value of 174.4 +/- 3.0/98.4 +/- 3.0 mmHg. The antihypertensive effect was well tolerated and sustained during drug administration. Biochemical variables including serum creatinine were essentially unchanged during therapy despite the marked reduction in blood pressure. In addition, renal function did not deteriorate during manidipine therapy as assessed by urinary excretion of phenolsulfonphthalein (22.6 +/- 4.0% vs. 27.9 +/- 6.0%, control). No severe adverse effects were encountered during therapy. We conclude that manidipine is a safe and useful antihypertensive agent for the management of hypertensive patients with renal disorders.