The average Toprol xl cash price is about $68.15 for a supply of: Tablet Extended Release 24 Hour 100 MG 30 pcs. Get our free Toprol xl coupon and be eligible to receive a discount. You can reduce your Toprol xl cost by up to 75% with our free Toprol xl discount card. Bring it to a participating pharmacy near you to save on your prescription medication.Metoprolol is a beta-blocker that affects the heart and circulation (blood flow through arteries and veins). Metoprolol is used to treat angina (chest pain) and hypertension (high blood pressure). It is also used to treat or prevent heart attack. Metoprolol may also be used for other purposes not listed in this medication guide.