Declares an intent to clarify the law on medical marijuana so that the lawful use of this substance is not impaired and medical practitioners are able to exercise their best professional judgment in the delivery of medical treatment, qualifying patients may fully participate in the medical use of marijuana, and designated providers may assist patients in the manner provided by this act without fear of state criminal prosecution. This act is also intended to provide clarification to law enforcement and to all participants in the judicial system.

Provides that, by July 1, 2008, the department of health shall adopt rules defining the quantity of marijuana that could reasonably be presumed to be a sixty-day supply for qualifying patients; this presumption may be overcome with evidence of a qualifying patient's necessary medical use.

Requires the department of health to gather information from medical and scientific literature, consulting with experts and the public, and reviewing the best practices of other states regarding access to an adequate, safe, consistent, and secure source, including alternative distribution systems, of medical marijuana for qualifying patients. The department shall report its findings to the legislature by July 1, 2008.