Overdosing on paracetamol is painful, very painful. I attempted suicide by said method. I swallowed a lot of pill and I went to sleep. When I woke up, the pain in my belly was horrible. I began scratching my arms and legs to provide sharp, identifyable pains, rather than the throbbing pain I was experiencing. About 12 hours after taking the pills, I asked my father to take me to the hospital, just to make the physical pain stop. I still wanted to die, but in the moment I wanted the physical pain to stop more. Don't do it that way. You don't need to experience what I did.