[ConservingFreedom]

If there was solid evidence that there are significant medical benefits from using marijuana then the major drug companies would be making millions billions off of it

Wrong - can't be patented.

[Prolixus]

Wrong - can't be patented. I'm sure analogues could be patented. But more importantly, there is no solid evidence (e.g., double blind trials) that there are significant medical benefits from the use of marijuana.