Nifedipine 20mg Tablet SR works by relaxing the blood vessels so that blood can flow more easily around your body. This lowers your blood pressure and reduces your risk of having a stroke, a heart attack, or kidney problems in the future. You do not usually feel any direct benefit from taking this medicine, but it works in the long term to keep you well. Take regularly, as prescribed for this medicine to be most effective, even if you feel better.
In Prevention of Angina (heart-related chest pain)
Nifedipine 20mg Tablet SR works by relaxing blood vessels so that blood can flow more easily around your body. This means that more oxygen gets to your heart and reduces the risk of getting chest pain (angina). This medicine should not be used to treat chest pain which is already happening. It is used to prevent or reduce the frequency of angina attacks. This medicine needs to be taken regularly as prescribed for it to work effectively. So, it is important to keep taking it even if you feel well and have no symptoms.