Amide: Lidocaine is a local anesthetic of the amide structure. Allergic reactions to this type of anesthetic are extremely rare. The ester type local anesthetics, which are metabolized to PABA by the liver, are more likely to cause allergic reactions. Ester types include procaine and tetracaine. Even these ester type anesthetics only cause allergic reactions in a very small percentage of patients.
Answered 4/23/2020
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