How is it abused?

Abusers typically ingest Soma orally. Many abusers take it in combination with other drugs to enhance the effects of those drugs. Alcohol, codeine, diazepam, heroin, hydrocodone (especially Vicodin), meprobamate, and propoxyphene commonly are abused in combination with Soma. Abusers who combine Soma with Vicodin claim that this combination produces effects similar to those of heroin.