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{{Infobox drug class
| Name = BetaPenyekat blockerbeta
| synonyms = βPenyekat-blockerβ
| Image = Propranolol-2D-skeletal.png
| Alt = Propranolol
| rxlist = 90349
}}{{italictitle}}
'''''BetaPenyekat blocker''beta''' ({{lang-en|beta blocker}}) adalah kelas obat yang digunakan untuk mengatur ritme jantung abnormal dan menjaga jantung dari [[serangan jantung]] berulang setelah serangan jantung pertama.<ref name="pmid10381708">{{cite journal |vauthors=Freemantle N, Cleland J, Young P, Mason J, Harrison J | title = beta Blockade after myocardial infarction: systematic review and meta regression analysis | journal = BMJ | volume = 318 | issue = 7200 | pages = 1730–7 | date = June 1999 | pmid = 10381708 | pmc = 31101 | doi = 10.1136/bmj.318.7200.1730 }}</ref> ''BetaPenyekat blocker''beta digunakan pula untuk mengobati darah tinggi, walaupun tidak lagi jadi pilihan utama.<ref name="pmid24352797">{{cite journal |vauthors=James PA, Oparil S, Carter BL, Cushman WC, Dennison-Himmelfarb C, Handler J, Lackland DT, LeFevre ML, MacKenzie TD, Ogedegbe O, Smith SC, Svetkey LP, Taler SJ, Townsend RR, Wright JT, Narva AS, Ortiz E |title=2014 evidence-based guideline for the management of high blood pressure in adults: report from the panel members appointed to the Eighth Joint National Committee (JNC 8) |journal=JAMA |volume=311 |issue=5 |pages=507–20 |year=2014 |pmid=24352797 |doi=10.1001/jama.2013.284427}}</ref>
 
Pada tahun 1964, [[James Black (farmakolog)|James Black]]<ref name="telegraph">{{cite news|url=http://www.telegraph.co.uk/news/obituaries/medicine-obituaries/7507080/Sir-James-Black-OM.html|title=Sir James Black, OM|date=23 March 2010|publisher=The Telegraph|accessdate=25 March 2010|deadurl=no|archiveurl=https://web.archive.org/web/20100327031442/http://www.telegraph.co.uk/news/obituaries/medicine-obituaries/7507080/Sir-James-Black-OM.html|archivedate=March 27, 2010|df=mdy-all}}</ref> mensintesiskanmenyintesiskan ''betapenyekat blocker''—beta—[[propranolol]] dan [[pronethalolpronetalol]] pertama yang dianggap sebagai salah satu sumbangsih terpenting dalam bidang kedokteran dan farmakologi pada abad ke-20.<ref name="pmid9456487">{{cite journal | author = Stapleton MP | title = Sir James Black and propranolol. The role of the basic sciences in the history of cardiovascular pharmacology | journal = Texas Heart Institute Journal | volume = 24 | issue = 4 | pages = 336–42 | year = 1997 | pmid = 9456487 | pmc = 325477 }}</ref>
 
== Catatan kaki ==