 [ Symptoms ] i am going to the dentist for a root canal and i have had a few glasses of wine will this be a problem with the novocaine [ Disease ] it is never a good idea to drink alcohol right before a dental appointment alcohol affects your blood clotting system and depresses the central nervous system not to mention how it can affect your in office behavior if you have anxiety it is much better to tell the dentist beforehand and so you can discuss your options