Explain the reason why local anesthetics that are given by injection occasionally contain epinephrine.
A) Epinephrine acts as a preservative to maintain an extended shelf life.
B) Epinephrine counteracts the vasodilation that occurs with local anesthetic use.
C) Epinephrine counteracts the vasoconstriction that occurs with local anesthetic use.
D) None of these are correct.
Correct Answer:
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