In marijuana, cannabinoids are effective in reducing pain. Bill McCarberg states that its hard to deal with the pain relieving effects of marijuana.McCarberg, Bill. "Marijuana Can Help in the Treatment of Pain." Marijuana. Ed. Noah Berlatsky. Detroit: Greenhaven Press, 2012. Opposing Viewpoints. Rpt. from "Marijuana and Pain Management." National Pain Foundation, 2012. Gale Opposing Viewpoints In Context. Web. 7 Feb. 2013.