Short acting EMLA (lidocaine and prilocaine): Emla (lidocaine and prilocaine) cream applied topically takes 30-60 minutes to work, and lasts for 1 to 2 hours. It is frequently used to aid in intravenous insertion in children.
Answered 6/25/2014
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Thanks for asking!: It depends where on the skin but it usually takes about 20-30 mins for most effective numbness to be achieved.
Answered 9/15/2015
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