A 27-year-old male asked:
If i have local dental anaesthesia without adrenalin in i can feel pain no matter how much they inject! but with adrenal it works how come?
1 doctor answer • 3 doctors weighed in
Dr. Arnold Malermananswered
Orthodontics 55 years experience
Local anesthetic: The epinephrine in some local anesthetics constricts blood vessels in the area of the injection, preventing the local anesthetic from being metabolized (broken down) and carried away.
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229 viewsReviewed >2 years ago
Last updated Jan 10, 2019
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