A general anaesthetic is an anaesthetic drug that brings about a reversible loss of consciousness. These drugs are generally administered by an anesthesia provider in order to induce or maintain general anaesthesia to facilitate surgery. It is the induction of a balanced state of unconsciousness, accompanied by the absence of pain sensation and the paralysis of skeletal muscle over the entire body. It is induced through the administration of anesthetic drugs and is used during major surgery and other invasive surgical procedures.