A patient is experiencing an allergic reaction characterized by urticaria and wheezing. Which medication is the preferred initial treatment?

Explanation

Epinephrine is the first-line treatment for allergic reactions involving urticaria and respiratory symptoms such as wheezing. Hydrocortisone may be used as an adjunct, but it is not the immediate drug of choice. Succinylcholine is a muscle relaxant and not indicated for allergic reactions. Therefore, epinephrine is the correct initial therapy.