Manual of Medicine - The β-blockers reduce blood pressure primarily by decreasing cardiac output .They may also decrease sympathetic outflow from the central nervous system (CNS) and inhibit the release of renin
![Do beta-adrenergic blocking agents increase asthma exacerbation? A network meta-analysis of randomized controlled trials | Scientific Reports Do beta-adrenergic blocking agents increase asthma exacerbation? A network meta-analysis of randomized controlled trials | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-020-79837-3/MediaObjects/41598_2020_79837_Fig1_HTML.png)
Do beta-adrenergic blocking agents increase asthma exacerbation? A network meta-analysis of randomized controlled trials | Scientific Reports
![Beta‐Adrenergic Blockers as a Potential Treatment for COVID‐19 Patients - Vasanthakumar - 2020 - BioEssays - Wiley Online Library Beta‐Adrenergic Blockers as a Potential Treatment for COVID‐19 Patients - Vasanthakumar - 2020 - BioEssays - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/21b73af1-8276-4a30-90c9-a543a39a8433/bies202000094-gra-0001-m.jpg?trick=1677441301465)