The use of cannabis to treat chronic pain has had a long history, with written references of its use dating back to around 2700 B.C.E. The first records in the nineteenth century were recorded by the Irish doctor William B. O’Shaughnessy, who described the use of cannabis in the treatment of cholera, rabies, tetanus, menstrual cramps and delirium tremens.

Marijuana is the name given to the dried buds and leaves of varieties of the Cannabis sativa plant, which can grow wild in warm and tropical climates throughout the world and be cultivated commercially. It goes by many names, including pot, grass, cannabis, weed, hemp, hash, marihuana, ganja, and dozens of others.

We are committed to ensuring safe, legal availability of marijuana for medical uses. Today over one million Americans are legally using medical marijuana—or "cannabis," as it is more properly called—under the care of their medical professional, and 40% of the country lives in a state where this treatment is an option.

We are committed to ensuring safe, legal availability of marijuana for medical uses. Today over one million Americans are legally using medical marijuana—or "cannabis," as it is more properly called—under the care of their medical professional, and nearly half the country lives in a state where this treatment is an option.