text: is it possible to od on tylenol? i am just wondering, tonight i had to take about 5 of them. i hope it is not. any ideas? it is possible, but a prescription strength dose of acetaminophen is probably what you just took (depending on the dosage of each pill).  here is a link that describes symptoms of an od of tylenol:  http://www.teenhealthfx.com/answers/health/3774.html