Answer
Early signs can include unusual mouth or tongue sensations, tinnitus, dizziness, blurred vision, agitation, drowsiness or twitching. Seizures, breathing problems or abnormal heart rhythms are emergencies.
Sources for this answer
- 1% w/v Lidocaine Injection BP — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.