Sorry you are in this predicament.
Its too late now but just know as an FYI that the pharma industry has made it near impossible to suicide with a majority of prescription medicines, much less OTC drugs.
Before you try anything else that will do permanent bodily harm w/o accomplishing your goal, please read the resources and / or use the search bar. 99% chance its been discussed already.
Wishing you a speedy recovery and minimal to no permanent damage.