Aim:To study the pharmacokinetics and relative bioavailability of diltiazem slow release tablets in healthy volunteers. Methods: Using the preparation from Shanghai as the reference preparation and using the preparation from Jiaozuo as the tested preparation. Twelve male healthy volunteers orally took a single and multiple doses of diltiazem slow release tablets in an open randomized crossover study. Serum concentrations of diltiazem were measured by HPLC. Results: The serum concentration time curves of ...