Since the legalization of medical cannabis in many states, it is getting more and more popular across the United States. There is a wide variety of methods of using medical cannabis including smoking, edibles, and concentrates. These days, cannabis concentrates have gained a lot of fan following. Both medical and recreational cannabis users are now choosing concentrates more often than flowers or edibles. To use medical cannabis, you need an MMJ card that lasts for a year in most states. After that, you need to get an MMJ card renewal.