I researched the three drugs I will be using for my project and used these sources:
http://www.drugabuse.gov/publications/drugfacts/heroin
http://www.drugabuse.gov/publications/drugfacts/methamphetamine
http://www.drugabuse.gov/publications/marijuana-abuse/how-does-marijuana-use-affect-your-brain-body
Interesting drug choices. Can’t wait to see what your research finds.