The Massachusetts Medical Marijuana Initiative allows for the legal possession, use, growing, and distribution of medical marijuana within Massachusetts. Patients who obtain a physician recommendation for medical marijuana may legally posses up to a sixty day supply of usable medical cannabis, use medical marijuana legally in their private residence, and obtain Massachusetts cannabis from a certified primary caregiver. Massachusetts marijuana patients are permitted to legally grow medical cannabis plants in their own private residence so long as the yield does not supersede the limit of a sixty day supply of usable product. Patients may only grow limited amounts of cannabis if their access to a medical marijuana treatment center is limited by verified financial hardship, a physical incapacity to access reasonable transportation, or the lack of a treatment center within a reasonable distance of the patient’s residence. Massachusetts medical marijuana patients may not sell medical cannabis to other medical marijuana patients, unless acting as a designated primary caregiver. A medical marijuana license does not guarantee immunity from workplace restriction on the use of medical marijuana; or housing restriction on the possession, growing, or use of medical cannabis. Driving under the influence of MMJ is prohibited under The Initiative. Massachusetts does not share reciprocity with other medical marijuana states. Potential Massachusetts medical cannabis patients should consult with a physician, or medical cannabis license registration company, to determine qualification to use medical marijuana in Massachusetts.