Erowid DXM Vault  
   Information including research, legislation, media coverage, bibliography and links.
   http://www.erowid.org/chemicals/dxm/

The Third Plateau  
   Provides harm reduction and safety information. Includes a knowledge base with various information.
   http://www.third-plateau.org

Coricidin (Dextromethorphan + Chlorpheniramine Maleate) Harm Reduction  
   Find warnings and articles related to the dangers posed by abuse of these cough and cold tablets.
   http://www.coricidin.org

Poisons Information Monograph 179  
   International Programme on Chemical Safety document describing the effects, dangers, and case reports of adverse reactions from taking this medicine.
   http://www.inchem.org/documents/pims/pharm/pim179.htm

The DXM Harm Reduction Project  
   Contains a beginner's guide, and lists dangers and known deaths from the recreational use of the drug.
   http://www.dextromethorphan.ws

The Dextroverse  
   Information and research on this over-the-counter drug. Includes trip reports, FAQ, and links.
   http://www.dextroverse.org

White Night  
   A homepage for a group of people who schedule group-trips together.
   http://noun.org/white/

DXM Stories  
   Reports by users of this drug. Site run by the Partnership for a Drug-Free America.
   http://www.dxmstories.com/

Indiana Prevention Resource Center - Dextromethorphan Factline  
   Information about the non-medical use of this drug.
   http://www.iprc.indiana.edu/publications/iprc/factline/dxm.html

The NCADI Reporter: Convenience Store High  
   Article on the abuse of cough medicines. Details risks, effects, deaths, and abuse prevention.
   http://www.health.org/newsroom/rep/170.aspx

The Dextro  
   Community centered around its forums, where users discuss experiences, chemistry-pharmacology, and other topics.
   http://www.thedextro.com