Is Lidocaine Harmful to the Liver?

Check with you Hepatitis doctor for the final opinion but there are ways to minimize the amount of lidocaine injected: such as nerve blocks which inject small amounts then use topical lidocaine only on those areas not numbed. The other suggestion is to mix it with Bupivacaine (marcaine) which has a different metabolic pathway. I do not think you will have a problem using these techniques

Anything you put into your body is technically absorbed and processed in the liver. However, lidocaine used in a procedure like this is minimal, and will have zero affect on your liver long-term, even if you have Hep C.