Magungunan beta wani nau'in magani ne wanda ke toshe tasirin adrenaline akan masu karɓar beta a cikin jiki, wanda ke rage saurin bugun zuciya kuma yana rage hawan jini. Ana amfani da wannan nau'in magungunan don magance yanayi kamar hawan jini, gazawar zuciya, da wasu nau'ikan cututtukan zuciya.
