Thank you for your question. If your pain is sufficiently controlled with tylenol after surgery, it is safe to stop narcotics that are causing nausea. The most important issue with tylenol is not to exceed 4,000 mg in 24 hours in trying to control severe pain, as there is a risk in some patients of causing serious liver problems. If you stay under 8 extra strength tylenols per day, you will probably do well. Always discuss any changes in prescription medications with your treating physician as they have the most intimate knowledge of your medical situation. Best wishes.
It is safe to use the Tylenol after surgery and it is unlikely to make you nauseated. Good luck