Why is there epinephrine in local anesthetic?

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I have been told it makes the local last longer. I don’t understand how when epi speeds heart rate and I assume metabolism.

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Anonymous 0 Comments

From what I’ve been able to gather, since epinephrine is a stimulant, it causes blood vessels to contract, reducing flow in the area. Since anesthesia causes vessels to dilate, this is necessary to keep the anesthetic local and prevent it from getting places it’s not meant to

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