Hypertension is a growing medical concern worldwide. With an increasing number of patients suffering from hypertension every year, the use of antihypertensive medications such as β-blockers has increased. β-Blockers 1, 1a and 1b are a group of compounds that competitively inhibit the effects of catecholamines at β-adrenergic receptors and have a diverse range of clinical applications in the treatment of cardiovascular disorders. 2, 2a, 2b and 2c Metoprolol (1) and betaxolol ...