Benzocaine hydrochloride is a local anesthetic in the form of hydrochloride salt benzocaine, pharmacological effects with benzocaine, procaine than anesthetic effect is weak. Part of the absorption is slow and lasting effect. Because they are insoluble in water, can not be used for anesthesia, relieve pain, anti-itching, drugs are usually made of powder or oil paste for the treatment of wound clinical, ulcers, burns, skin abrasions and hemorrhoids.