Amlodipine (Betabest AM) is a calcium ion influx inhibitor (slow channel blocker or calcium ion antagonist) and inhibits the transmembrane influx of calcium ions into cardiac and vascular smooth muscle.

Don't stop taking the medication without talking to your doctor first. Stopping Betabest AM 50 Tablet 10's gradually may cause changes in your heart rhythm and blood pressure, cause chest pain, or a heart attack. Your doctor will lower your dose gradually over a period of time to help prevent these symptoms. Betabest AM 50 Tablet 10's can cause low blood sugar (hypoglycaemia). This medication should be used with caution if you have diabetes, particularly if you are taking insulin or other diabetes drugs that may cause low blood sugar. This medication can also induce low blood sugar in babies, children and adults who do not have diabetes. Do not take Betabest AM 50 Tablet 10's if you have asthma or similar breathing difficulties. It could make your asthma severe.