I tried to od on just propanolol, was almost high from it the next day, but then the week following I had major chest pains, ended up phoning an ambulance (shit was painful yo)
Turned out there was nothing wrong, might have just fucked with my benzo withdrawals.
I thought that that would do it, I mean, its a heart medication, but no.
Found this on team of one
https://www.drugs.com/trazodone.html
'Overdose symptoms may include extreme drowsiness, vomiting, penis erection that is painful or prolonged, fast or pounding heartbeat, seizure (black-out or convulsions), or breathing that slows or stops.'
Hhmmm, wouldn't wanna be found with a rigimortis boner!!
Either way, your risking a lot trying. Unless you bucket fulls. I wouldn't risk it.