Many doctors prescribe a pain killer and a mild sleeping tablet for you to use after surgery. In most cases they will also prescribe an antibiotic and sometimes something in case you feel nauseated. If your doctor prescribes an antibiotic it is important that you take it as prescribed on the bottle. The other medicines you can take at your discretion. If you think you may be allergic to any of the medicines prescribed call your doctor's office immediately. Remember that all medicines have side effects. One of the most common is gastrointestinal upset. This means you can have an upset stomach or diarrhea. If this becomes severe call your doctor. As soon as possible stop taking narcotics and sleeping tablets. Many patients are surprised that they can obtain good pain relief with simple over-the-counter medicines like Tylenol. Do not take aspirin because this can increase the risks of bleeding. Narcotics and sleeping tablets will interact with alcohol so do not drink at the same time as you take them. They will also make you drowsy so do not drive while you are taking them.