Nefpin 20 Tablet 10's is used to treat high blood pressure (hypertension). It is also used to reduce strokes and chest pain (angina) caused by the arteries' blockage. In addition to this, it is also used to treat preterm labour. It contains Nifedipine, which works by relaxing the blood vessels; this lowers your blood pressure and reduces your risk of stroke, heart attack, other heart problems, or kidney problems in the future. It may cause common side effects like low blood pressure, headache, slow heartbeat, dizziness, and rash in some cases. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions.