I don’t think that it would be very smart to take these. It may make the dreams that you have when you don’t take them to seem stale and bland. And you may become dependent on them to have a LD. Just my advise though! After all, I am going to go into the profession of a pharmacist when I get out of college. 
It isn’t just B-6, there are many other factors that increase such feelings.:
5-HTP
Omega-3(Although nobody else has tried this, Worked for me though.)
As far as this goes though, I still stress that I am not willing to take a man-made drug that has effects my dreaming world . Omega-3 is simply a compound found in animal fats, and you can read up on it if you want.