Indica and Sativa Cannabis Subspecies. With more than 1,000 strains of cannabis having been bred during the past several decades, it is critical that patients are aware of the different types of efficacy available to them in terms of cannabis medicine. Some varieties of  Sativa  most appropriate for particular diseases and ailments, but not others. Choosing the right strain is critical to ensuring that patients receive the best therapy possible.

Cannabis is a species of flowering herb that splits  into three subspecies: Indica , and ruderalis. Ruderalis plants are small and yield relatively little medicine; what they do provide lacks potency and  generally not appealing to patients. Because of this, ruderalis strains are typically avoided by breeders and cultivators; the focus of the medical cannabis community is on indica and sativa strains.