Definition of Medication, beta-blocker
Medication, beta-blocker: Drugs that antagonize the action of adrenaline (a beta adrenergic substance) and relieve stress to the heart muscle. Beta-blockers are often used to slow the heart rate or lower the blood pressure. They are also used to prevent migraine headaches.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=4323
Last Editorial Review: 9/20/2012
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