Met XL 3D 25/ 12.5 Tablet ER is used in the treatment of Hypertension (high blood pressure). View Met XL 3D 25/ 12.5 Tablet ER (strip of 15.0 tablet er) uses, composition, side-effects, price, substitutes, drug interactions, precautions, warnings, expert advice and buy online at best price on 1mg.com In select cities, deliveries are done in as less as 1 day. Only genuine and top-quality products delivered. With more than 5 ,600 stores in India, Apollo Pharmacy is not just the largest online pharmacy store in India but in Asia as well. Uses of Met Xl 12 . 5 MG Met XL 12 . 5 tablet is used to treat high blood pressure mainly, along with certain heart conditions such as angina (chest pain) and heart failure. Met Xl 12 . 5 MG Tablet XL is a heart medicine that contains Metoprolol. It is used to treat hypertension (high blood pressure), angina pectoris (chest pain caused when your heart muscle does not get enough oxygen-rich blood), and arrhythmia (irregular heartbeat).