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what is given to patients before surgery for making them unconscious?

When you get general anesthesia, you're "put under," which means that you're totally unconscious and immobilized. You "go to sleep" and don't feel, sense or remember anything that happens after the drugs begin to work on your system.

 medications to produce unconsciousness
    analgesics to provide pain relief
    muscle relaxants to induce muscle relaxation
    inhalational anesthesia agents to keep you unconscious.

Other medications which are given include:

    medications that produce short-term memory loss or amnesia
    medications that minimise nausea and vomiting (anti-emetics)
    medications that counter-act the effect of other medications (antagonists)
    and medications that suppress certain nervous reflexes, such as slowing of the heart.

 These medications include thiopentone or pentothal and propofol. When given by intravenous injection, these medications quickly make you unconscious. This rapid loss of consciousness makes the induction of anesthesia much more pleasant.


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