To purchase healing marijuana in pharmacies or specialized dispensaries, all California visitors or tourists need to obtain an approved recommendation from a qualified medic, as well as issue an MMJ ID card. In a case the client is officially registered via the California Medical Marijuana Program database, additional tax payment of 15% of the cost of cannabis is required to buy MJ for recreation. Each visitor decides whether to pay him an additional tax or issue an ID Medical Marijuana Card.
Nowadays, no one is detained while trying to purchase medicinal marijuana throughout California. In any case, for the free purchase of marijuana, each client should issue an official medical recommendation from a qualified physician who is an official Medical Marijuana Program member in California or the other US state. California is the first throughout the United States where marijuana was fully legalized as a therapeutical remedy. The relevant law was adopted in 1996 after the enactment of Proposal 125. To register for a Medical Marijuana State Program, you must register through the official California Medical Marijuana Program website.
Issuing an MMJ card takes only 5 to 10 minutes of your time. Immediately after approval by a qualified doctor and payment for services (including tax), all relevant documents will be sent to you by e-mail or US mail by an address, even if you are not a resident of the state of California. If you already obtained an MMJ card, you will not have problems when purchasing marijuana in related pharmacies or specialized dispensaries for recreational or medical purposes.
Source: https://dr-weedy.com/medical-marijuana-card-california-ca/