"The most commonly seen manifestations in poisoning include GI distress, bradycardia with AV block, hypotension, lethargy, and dizziness.14 Convulsions, electrolyte disturbances, hypertension, and coma have been reported in severe poisoning."
You are going to be in all kinds of horrible pain and distress before you die. Not a good way to go. Also, with any OD, your results will vary compared to everyone else. What killed someone might only put you in the hospital.
Source:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6996654/