Cannabis in Spain is illegal for commercial purposes, but decriminalized for personal cultivation and use, and other purposes other than sale or trade. Using the legal gray areas in Spanish legislation, cannabis clubs are a popular way for enthusiasts to obtain and use cannabis as a technically-legal private collective.
Several cannabis consumption clubs and user associations have been established throughout Spain. These clubs, the first of which was created in 1991, are non-profit associations who grow cannabis and sell it at cost to its members. The legal status of these clubs is uncertain: in 1997, four members of the first club, the Barcelona Ramón Santos Association of Cannabis Studies, were sentenced to 4 months in prison and a 3000 euro fine, while at about the same time, the court of Bilbao ruled that another club was not in violation of the law. The Andalusian regional government also commissioned a study by criminal law professors on the "Therapeutic use of cannabis and the creation of establishments of acquisition and consumption. The study concluded that such clubs are legal as long as they distribute only to a restricted list of legal adults, provide only the amount of drugs necessary for immediate consumption, and not earn a profit. The Andalusian government never formally accepted these guidelines and the legal situation of the clubs remains insecure. In 2006 and 2007, members of these clubs were acquitted in trial for possession and sale of cannabis and the police were ordered to return seized crops."
About 500 private "cannabis clubs" exist in Spain, 200 of them in Barcelona alone, and Spain is spoken of as the "new Amsterdam," a destination for marijuana tourists. All actions related to cannabis apart from sale or trade aren't considered criminal offenses, and normally are misdemeanors punishable by a fine.
In October 2005, the autonomous government in the region of Catalonia launched a program of therapeutical use of Sativex for 600 patients of a wide set of illnesses, from multiple sclerosis to cancer, in order to avoid nauseas or to relax tense muscles. The project involves six hospitals, forty researchers and sixty drugstores. The product is presented as an atomizer to be taken orally, and it will be delivered at drugstores inside some hospitals. The full text of the research initiative can be seen here, in Catalan, from the Universitat Autònoma de Barcelona.