October 19, 2015 8:20 am Harmful Effects of Tylenol Taking too much of the popular pain reliever can cause harmful side effects. US & World Videos 6:03 Tensions rise during campus protests at MIT and Harvard 6:19 Police surround pro-Palestinian encampment at MIT 5:12 Karen Read's defense pushes the question of credibility 2:58 Karen Read trial: Defense accuses prosecution witness of perjury 2:24 Gov. Maura Healey reacts to Steward bankruptcy filing