I wouldn't try to kill yourself with over the counter meds. You need some serious pain killers combined with benzos, muscle relaxers, all that kind of stuff. Some serious sedatives. I have morphine ER, percocet, Xanax, Klonopin, muscle relaxers, fentanyl patches. My friend killed herself with a lot of that stuff. Over the counter meds won't do it. You also need to know how to do it and plan the day you're going to do it so you can take anti nausea medication every 6-8 hours for two days before you do it.