What are anesthetics? Give example.

An anesthetic is a drug that causes anesthesia—reversible loss of sensation.Anesthetics are categorized into two classes: general anesthetics, which cause a reversible loss of consciousness, and local anesthetics, which cause a reversible loss of sensation for a limited region of the body while maintaining consciousness. Combinations of anesthetics are sometimes used for their synergistic and additive therapeutic effects
EX-cocaine and procaine