What is a bupavacaine hydrochloride and epinephrine injection?

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Bupivacaine-epinephrine injection is a combination of a long-acting local anesthetic (numbing substance) plus a vasoconstrictor (to decrease bupivacaine absorption into the blood) drug used to provide local (limited) anesthesia or nerve block during surgery or other invasive procedures. It works by making nerve membranes more stable so nerve impulses are not transmitted and felt as strongly. A local anesthetic effect, where one part of the body becomes numb to pain without any loss of consciousness, is usually reached within two to 10 minutes after injection. Numbness can last as long as seven hours in some people. Bupavacaine-epinephrine injection should only be administered by qualified clinicians.

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