Metol XL 50 pill belongs to a class of medications known as beta blockers. It is used to treat hypertension (high blood pressure), angina (chest discomfort caused by a heart condition), and arrhythmia. It also helps to protect against migraines, future heart attacks, and strokes. Metol XL 50 pill relaxes the blood vessels, allowing blood to circulate more readily throughout your body and ensuring that your heart receives an adequate supply of oxygen. This reduces the likelihood that you may get chest pain caused by angina. This medication can improve your ability to exercise and go about your regular activities by reducing the frequency of angina attacks. To be effective, you should take it on a regular basis for the duration indicated.