Narcotic drugs are mainly used to relieve pain by anesthetizing your nerves, and the existence of side effects has always been a matter of debate. If local anesthetic drugs are used, because they do not enter the blood vessels and do not enter the cerebral circulation, the effect on the body in all aspects is smaller, if it is a general anesthetic drug. The reason for this is that it is a general anesthetic that enters the bloodstream and has an effect on the nerves of the brain, which may have some effect on the memory capacity.