It is available in tablet form ... pressure), such as Lopressor (metoprolol) or Tenormin (atenolol), can cause an additive effect with amlodipine. This, in turn, can cause low blood pressure ...

Objective: The aim of this study was to compare the antihypertensive efficacy and tolerability of the calcium channel antagonist amlodipine ... by a 4-day placebo drug-free period.

A stepped regimen of amlodipine 5-10 mg/day with addition of perindopril 4 or 8 mg/day as required ('modern' regimen) was compared with a 'traditional' regimen of atenolol 50-100 mg/day with ...