Most medications have a buffer, so if you accidentally take an extra dose (instead of just 2 pills every 6 hours, but no more than 6 in a 48 hour period). Acetaminophen does not have that buffer. Even just slightly over the dosing recommendations can be lethal, and for a drug that's in hundreds of products, that's terrifying. Imo you're being exceptionally careless for one of the most dangerous OTC drugs we have available.