Calaptin is used alone or together with other medicines to treat heart rhythm problems, severe chest pain (angina), or high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, or kidney failure. High blood pressure may also increase the risk of heart attacks. These problems may be less likely to occur if blood pressure is controlled. Calaptin is a calcium channel blocker. It works by affecting the movement of calcium into the cells of the heart and blood vessels. As a result, Calaptin relaxes blood vessels and increases the supply of blood and oxygen to the heart while reducing its workload.

Calaptin 40 Tablet 30's is not recommended in people using beta blockers as it may cause atrioventricular (AV) block (a type of heart block) and bradycardia (slow heart rate). Calaptin 40 Tablet 30's is also not recommended in patients who have heart failure or severe problems with the impulse or rhythm of the heart (unless you have a pacemaker), had a heart attack recently, a history of bradycardia (slow heart rate) or hypotension (low blood pressure), and Wolff-Parkinson-White syndrome (rapid heart rate associated with dizziness). Calaptin 40 Tablet 30's contains sunset yellow aluminium lake as a colourant, which may cause allergic reactions in some people. Please do not eat or drink products containing grapefruit as it may increase the effects of Calaptin 40 Tablet 30's.