lol dude look at the bottle if there is anything but dxm in the active ingredients list than dont take it. pretty simple.
The acetaminophen would do some serious damage to your liver at the dose you would need to take to get enough DXM and the doxylamine would put you to sleep before you even started feeling it. Do not do it. Under any circumstances.
I second that. It's not that hard of a concept... nothing but dxm...safe. other active ingredients...not safe.