University Herald | Johnson and Johnson Gives Tylenol A New Red Cap Warning Of Liver Failure ... University Herald Acetaminophen is the primary ingredient in Tylenol and is the leading cause of sudden liver failure. The Food and Drug Administration (FDA) has been looking into regulating the intake of the compound and has set a limit of 4,000 milligrams per day for ... Tylenol Warnings: Bold New Warnings Tell Of Fatal Liver Failure Risk Tylenol warnings: Liver failure, deaths prompt Tylenol warnings, 500mg or 325mg? Tylenol warnings: Bottle cap labels focus on liver failure risks |