3. Popping a Tylenol to relieve that alcohol-induced headache
Mixing Tylenol with alcohol can be toxic for your liver. "I've seen liver enzymes, a marker of acute liver injury, shoot up into the hepatitis range after someone has ingested alcohol and then taken Tylenol," says Dr. Adriane Fugh-Berman, an expert in herbal medicine at Georgetown University Medical Center. Take an aspirin or ibuprofen instead.