Allergic Reactions: Allergic reactions (in most severe instances, anaphylactic shock) to local anaesthetics of the amide type are rare. Other constituents of the jelly eg, methyl parahydroxybenzoate and propyl parahydroxybenzoate may also cause this type of reaction.
Acute Systemic Toxicity: Lidocaine may have acute toxic effects if high systemic levels occur due to fast absorption or overdosage. (See Pharmacology under Actions and Overdosage.)
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