Hi, It is possible that the combination of Tylenol and alcohol contributed to your symptoms. Both Tylenol and alcohol can irritate the stomach lining and cause nausea, stomach pain, and vomiting. When taken together, they can also increase the risk of liver damage. The dizziness and low blood pressure may be a side effect of Tylenol, which can cause blood pressure to drop in some people. It is important to note that alcohol can also lower blood pressure, which may have contributed to the symptoms you experienced. In addition, Tylenol contains acetaminophen, which can be toxic to the liver in high doses or when combined with alcohol. If you have liver disease or regularly consume alcohol, it is important to talk to your doctor before taking Tylenol or any other medication containing acetaminophen. It is also possible that your symptoms may be unrelated to the Tylenol and alcohol, and could be due to other factors. If symptoms become worse or continue to persist then seek medical attention to check for any medical conditions. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician