Metoprolol Succinate, the world's first Beta-1 Selective Receptor blocker, was developed by AstraZeneca and first launched in 1992. It is commonly used in clinical practice to treat hypertension, angina pectoris, and stable chronic heart failure with impaired left ventricular systolic function.

Metoprolol was first developed in 1969 at Hassle Laboratories in Sweden. As a selective beta-1 adrenergic receptor blocker, it binds to beta-1 receptors to antagonize the effects of neurotransmitters and catecholamines on beta receptors. This action increases vascular smooth muscle sensitivity to vasoactive mediators and inhibits renin secretion. Clinically, it is used to treat hypertension, angina pectoris, and heart failure.