A report on Anesthetic and Benzocaine

It is the active ingredient in many over-the-counter anesthetic ointments such as products for oral ulcers.

Ester local anesthetics (such as procaine, amethocaine, cocaine, benzocaine, tetracaine) are generally unstable in solution and fast-acting, are rapidly metabolised by cholinesterases in the blood plasma and liver, and more commonly induce allergic reactions.