Marcaine Solution is a local anesthetic. It works by blocking the generation and conduction of nerve impulses.

you are allergic to any ingredient in Marcaine Solution or other similar medicines (eg, amide-type anesthetics)

Check with your doctor if any of these most COMMON side effects persist or become bothersome
Mild dizziness or drowsiness.

Seek medical attention right away if any of these SEVERE side effects occur
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; changes in hearing; chest pain; excitement; irregular heartbeat; nausea; numbness that lasts for more than a few hours; restlessness; ringing in the ears; seizures; severe dizziness or drowsiness; tremors; vomiting.