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Examples of preanesthetic agents are:
These are the drugs used prior to the administration of an anesthetic agent, with the important object of making anesthesia safe and more agreeable to the patient. The reasons for such medication are
1) For sedation, to reduce anxiety and apprehension 2) To obtain an additive or synergistic effect so that induction could be smooth and rapid 3) To counteract certain adverse effects of the anesthetic drug 4) to relieve from pain
common drugs used are 1) Opioid analgesic : morphine, pethidine and buprenorphine.