My sources: wikipedia, pubmed, webmd, personal experience, erowid, bluelight, when champlegals was up, on here I occasionally draw sources from after double checking, my copy of Physicians Desk Reference... Talk to a doctor? I have a fucking doctors goddamned prescription medication book, and I have talked to fucking toxicologist analysists about their use, so yeah I think I am covered there.

I'm not saying DXM is safe or unsafe, I am saying the facts that you state why it is unsafe are not really facts, they are your beliefs that you can not back up.

Real factual side effects of DXM: (directly from WebMD)
Slight drowsiness/dizziness, nausea, or vomiting may occur. Rarely, some people may experience severe drowsiness/dizziness with normal doses. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

Guaifenesin: (again, WebMD)
Side effects from this medication are unlikely.