Like metoprolol, atenolol competes with sympathomimetic neurotransmitters such as catecholamines for binding at beta(1)-adrenergic receptors in the heart and vascular smooth muscle, inhibiting sympathetic stimulation.

You may report side effects to FDA at 1-800-FDA-1088. Norvasc Missing A Dose If you can't take amlodipine or other calcium channel blockers because of side effects, you may be able to switch to another blood pressure-lowering medicine.