Definition of "metoprolol" []

• A selective β1 receptor blocker used in treatment of several diseases of the cardiovascular system, especially hypertension. (noun)

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• "Rather, metoprolol seemed to improve shooting by alleviating hand tremor."
• "A study conducted in the mid-1980s suggests that beta-blockers do work.18 A group of Dutch scientists asked about thirty skilled marksmen to shoot a standard 25 mm pistol after taking either the beta-blocker metoprolol or a placebo drug."
• "Shooting was about 13 percent better in the marksmen given metoprolol compared to those who got the sugar pill."