Lalcar ER-20 Tablet 10's is used to treat hypertension (high blood pressure), moderate to severe heart failure, and angina (heart-related chest pain). Besides this, it also reduces the risk of heart attack or stroke in adults. It contains Carvedilol, which acts by relaxing blood vessels and lowering the raised blood pressure. It makes the heart beat with less force and reduces the risk of stroke, heart attack, or other heart problems. In some cases, you may experience diarrhoea, headache, weight gain, slow heartbeat, dry eyes, tiredness, dizziness, or low blood pressure. 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.