What is the brand name of promethazine hydrochloride?

A. Proventil is a proprietary brand name for albuterol sulfate, a short-acting beta-2 adrenergic agonist. It is clinically indicated for the relief of bronchospasm in patients with reversible obstructive airway disease. It lacks any antihistaminic or antiemetic properties. B. Phenergan is the brand name for promethazine hydrochloride, a phenothiazine derivative. It functions as a non-selective antagonist at central and peripheral H1 receptors. This molecule possesses significant antiemetic, sedative, and anticholinergic properties used in various clinical settings. C. Pulmicort is the brand name for budesonide, an inhaled corticosteroid used for the maintenance treatment of asthma. It modulates the inflammatory response by reducing the recruitment of inflammatory cells. It is not chemically related to the drug promethazine. D. Proair is another brand name for albuterol sulfate, similar to Proventil. It is administered via metered-dose inhaler for the acute management of asthma symptoms. It does not contain promethazine hydrochloride and targets adrenergic rather than histaminergic receptor pathways.