Author: Joshua Alexander, MD
COMMON USES: Numbs the skin to make needle sticks less painful
HOW IT'S SUPPLIED: Cream containing 4% lidocaine (5 gram and 30 gram tubes)
HOW IT WORKS: Absorbed into the skin and numbs the nerve endings and pain receptors there so that pain is not felt.
THINGS TO DISCUSS WITH YOUR DOCTOR: * Unlike EMLA (see previous med of the month description) No prescription is needed. * Takes only 15 minutes to start working (versus 2 hours for EMLA). * Do not put on over scratched or broken skin or near eyes. * The cream should be applied very thick (about 1\4 inch thick) to the site of the procedure. * Do not rub the cream into the skin. Instead, cover it with saran wrap being careful not to press on the cream so it stays thick. * Skin numbness lasts for about an hour after the medicine is removed. * The skin under the medicine may become pale or light red in color. This goes away a few hours after the medicine is removed. * May cause an allergic reaction. * Using too much cream at one time may cause changes in the heartbeat. * Do not use in people who have methemoglobinemia or liver disease.
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