ASA - Americans for Safe Access
Americans for Safe Access is the nation’s largest organization of patients, medical professionals, scientists and concerned citizens promoting safe and legal access to cannabis for therapeutic use and research.

Drug Policy Alliance - Drug Policy Alliance
Alternatives to Marijuana Prohibition and the Drug War.

MAPS - Multidisciplinary Association for Psychedelic Studies
MAPS' mission is to sponsor scientific research designed to develop psychedelics and marijuana into FDA-approved prescription medicines, and to educate the public honestly about the risks and benefits of these drugs.

MPP - Marijuana Policy Project
MPP lobbies at the federal and state level to pass laws allowing seriously ill patients to safely and legally access medical marijuana, and to replace marijuana prohibition with a sensible system of regulation.

NORML - California NORML
California's chapter of the national organization to reform marijuana laws.

ProCon.org - Medical Marijuana ProCon.org
Should marijuana be a medical option now?