beta-blocker
noun
be·ta-block·er
ˈbā-tə-ˌblä-kər 
: any of a class of drugs (such as propranolol) that decrease the rate and force of heart contractions and lower high blood pressure by blocking the activity of beta-receptors
Examples of beta-blocker in a Sentence
Recent Examples on the Web
Those medications can include antihistamines, beta-blockers, diuretics, anti-psychotics and stimulants such as ADHD medications or SSRIs.
—
Jacqueline Howard, CNN Money, 18 June 2026
Likewise, those on certain medications, such as beta-blockers and antihypertensives, and people with certain heart or lung conditions can be at greater risk.
—Andrea Thompson, Scientific American, 11 June 2026
Doctors put him on beta-blockers, but his symptoms didn't improve.
—Vanessa Etienne, PEOPLE, 5 June 2026
But collectively, the competitors were on some combination of 37 substances, including Adderall, beta-blockers, human growth hormone, and five forms of testosterone.
—Ellen Cushing, The Atlantic, 25 May 2026
In addition, healthcare providers may prescribe medications to help lower blood pressure, such as ACE inhibitors, beta-blockers, diuretics, or other options.
—Ashley Olivine, Verywell Health, 14 May 2026
The beta-blocker was approved by the US Food and Drug Administration in 1967 for the treatment of heart problems including high blood pressure, arrhythmia (irregular heart rate) and angina.
—The Week Uk, TheWeek, 22 Apr. 2026
Research shows that beta-blockers and diuretics don’t work as well when caffeine enters the mix.4
Maron recommends limiting caffeine intake to less than 400 milligrams (mg) per day, roughly the amount in three cups of coffee.
—Julia Ries Wexler, Health, 4 Feb. 2026
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Jacqueline Howard, CNN Money, 18 June 2026
Likewise, those on certain medications, such as beta-blockers and antihypertensives, and people with certain heart or lung conditions can be at greater risk.
—Andrea Thompson, Scientific American, 11 June 2026
Doctors put him on beta-blockers, but his symptoms didn't improve.
—Vanessa Etienne, PEOPLE, 5 June 2026
But collectively, the competitors were on some combination of 37 substances, including Adderall, beta-blockers, human growth hormone, and five forms of testosterone.
—Ellen Cushing, The Atlantic, 25 May 2026
In addition, healthcare providers may prescribe medications to help lower blood pressure, such as ACE inhibitors, beta-blockers, diuretics, or other options.
—Ashley Olivine, Verywell Health, 14 May 2026
The beta-blocker was approved by the US Food and Drug Administration in 1967 for the treatment of heart problems including high blood pressure, arrhythmia (irregular heart rate) and angina.
—The Week Uk, TheWeek, 22 Apr. 2026
Research shows that beta-blockers and diuretics don’t work as well when caffeine enters the mix.4
Maron recommends limiting caffeine intake to less than 400 milligrams (mg) per day, roughly the amount in three cups of coffee.
—Julia Ries Wexler, Health, 4 Feb. 2026
Cite this Entry
“Beta-blocker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beta-blocker. Accessed 21 Jun. 2026.
Copy CitationMedical Definition
beta-blocker
noun
be·ta-block·er
-ˈbläk-ər
: any of a group of drugs (as propranolol) that combine with and block the activity of a beta-receptor to decrease the heart rate and force of contractions and lower high blood pressure and that are used especially to treat hypertension, angina pectoris, and ventricular and supraventricular arrhythmias compare alpha-blocker
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