Beta-blockers (a class of drugs used to treat high blood pressure), such as Lopressor (metoprolol) or Tenormin (atenolol), can cause an additive effect with amlodipine. This, in turn, can cause ...

The pharmaceutical industry has been closely monitoring this case, as Dr Reddy's used a novel approach to make its generic drug. Pfizer's original patent on amlodipine besylate (US Patent ...