Amlodipine Mesilate tablets are known by the brand name drug Calvasc. Amlodipine Besylate is known by the brand name drug Norvasc.
Generic amlodipine Mesilate tablets were launched following expiry of the patent for Norvasc (amlodipine besilate). It has confirmed that the Mesilate and Besylate salts are interchangeable on a prescription for “amlodipine” tablets and that the efficacy and tolerability observed with amlodipine maleate were similar to those seen with amlodipine besylate.