alt Hacker NewsIt's a pretty terrible way to go. Death doesn't come immediately; you seem fine at first, and then about 3 days later you suffer intense abdominal pain and vomiting. At about 4 days you realize your liver is irreversibly shot and you're a dead man walking unless you can get a liver transplant. Then you enter multi-organ failure as your body and brain shuts down.
Acetaminophen poisoning actually featured on two episodes of House, and one of them had the suicide plotline. In S05E11, "Joy to the World" they suspected an overweight teen OD'd on acetaminophen trying to kill herself, but the actual diagnosis was eclampsia from an undisclosed pregnancy. In S06E10, "Wilson", a friend of Wilson's suffers acetaminophen poisoning while trying to manage his back pain.