Which of the following is not a beta agonist?

Prednisone is a corticosteroid and is not classified as a beta agonist. Beta agonists, such as albuterol, bitolterol, and metoproterenol, are medications that stimulate beta-adrenergic receptors, leading to relaxation of bronchial smooth muscle and dilation of the airways. They are primarily used in the treatment of asthma and other conditions characterized by bronchospasm.

In contrast, prednisone works by reducing inflammation and suppressing the immune response. It is commonly used to treat a variety of inflammatory and autoimmune conditions, but it does not have the mechanism of action associated with beta agonists. Understanding the differences in classes of medications is essential for distinguishing their therapeutic effects and appropriate clinical applications.