About how much is a proper dose of dmx in OTC medication?

[Ganjatoker]

I went out camping with my cousins the other day and one of them had a mild cough. He brought 3 bottles of this cough suppressant (which i will provide a link in the bottom) and offered me some so we could trip in the woods but i figured it wasn't a smart idea for me since it would be my first time experiencing with dmx and a hallucinogen in general with no one else around to help out other than my cousins. I am looking foward to taking a trip now so i can experience it before i do it with this cute girl that im really into. Just how much of this stuff would be fatal and what would be a proper dose? And if anything i do have nyquil and dayquil if its any better but i just dont know how much of it would be fatal. Also, i apologize if im breaking any rules i am just trying to be safe and i would much appreciate it if someone can move this thread if it doesnt belong here.

Link to product:
http://www.drugs.com/otc/127455/dg-health-cough-dm.html

 

[Ganjatoker]

Each 5ml of this medication contains 30mg of dmx. Its only active ingredient is dmx and contains to acetaminophen