Stop in for a cup of coffee

So do I tell my doctor that the immune-modulating drug I am taking isn't doing much that I can tell, and see if he will prescribe this new Epidiolex?
Yes. Any Doc can prescribe Epidolex for any indication they choose. You will have to wait a little bit for it to get on the market as it was just approved today. After it is available, physicians can apply it in any way they see fit. It might just work for you and it is completely safe with very few side effects...none serious.