A recent study found:
1. 4.9% of high school students in the Worcester area reported having tried heroin at some point in life
2. The Greater Boston Area ranked number one in a survey of eleven metropolitan areas in the United States in emergency room visits
Source: http://www.telegram.com/article/20121115/NEWS/111159907/1052&template=MO...
The constitutionality of MGL 64k was upheld by the Massachusetts Supreme Judicial Court in Commissioner of Revenue v. Mullins in 1998: http://masscases.com/cases/sjc/428/428mass406.html
The Massachusetts Department of Revenue already enforces MGL 64k:
http://www.mass.gov/dor/docs/dor/cigarette/pdfs/cst-1.pdf
The text of Massachusetts General Law 64k can be found here:
http://www.malegislature.gov/Laws/GeneralLaws/PartI/TitleIX/Chapter64k