Beta blockers are prescription medications used to treat a wide variety of conditions. Some of the most common uses of beta blockers include (but are not limited to):
There are several different beta blocker medications, some of which are used frequently and some of which are used rarely.
Some are "cardioselective" (meaning they are more likely to affect the heart and blood vessels rather than other parts of the body), some have "intrinsic sympathomimetic activity" (meaning they slightly stimulate beta receptors while also blocking them), and some are alpha blockers as well as beta blockers.
(Click List of Beta Blockers for a description of the medications in this category that are currently available in the United States.)