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Synera Side Effects Center
Medically reviewed by Min Clinic Staff | Updated: January 2026
- Generic Name: lidocaine and tetracaine
- Brand Name: Synera
Synera (Lidocaine and Tetracaine) side effects drug center
Synera Side Effects Center
What Is Synera?
Synera (lidocaine 70 mg and tetracaine 70 mg) Topical Patch contains a local anesthetic used on intact skin to provide local dermal analgesia for superficial venous access and superficial dermatological procedures such as excision, electrodessication and shave biopsy of skin lesions.
What Are Side Effects of Synera?
Common side effects of Synera include localized site reactions such as hives, blanching, swelling, abnormal sensation, rash, or skin discoloration. Systemic side effects of Synera are uncommon but may include:
- dizziness
- headache
- nausea
- drowsiness
- vomiting
- lightheadedness
- nervousness
- apprehension
- euphoria
- confusion
- ringing in the ears
- blurred or double vision
- sensations of heat or cold
- numbness
- twitching
- tremors
- convulsions
- unconsciousness