Cannabis was used by our ancestors:

The medicinal use of marijuana has been traced as far back 2737 BC in China where it was used to treat rheumatism and gout.  By the year 2000 BC cannabis was in use in Korea and Egypt. From there, it spread around the world.

Today, the medicinal properties of  cannabis are widely recognized and documented. People who are interested in better health can review the literature, travel, experiment, and find better medicines for themselves or better dietary supplements on the market than in the past.

Cannabinoid research companies are using old medicine to create modern medicine just like the majority of drugs are developed by major pharmaceutical companies.