Metoprolol is a prescription drug. It comes as immediate-release and extended-release oral tablets, and extended-release oral capsules. It also comes in an injectable form that's only given by a healthcare provider.
Metoprolol oral tablets are available as the brand-name drugs Lopressor and Toprol XL. They're also available as generic drugs. Generic drugs usually cost less than the brand-name versions. In some cases, they may not be available in all strengths or forms as the brand-name drugs.