--many of which I still recall many years later, but I too have noticed that this effect has been enhanced over the 3-plus years now I've been taking large amounts of B-vitamins and other supplements.

The dreams are not normally scary, but they often seem to mix and match disparate elements from my life that would normally be juxtaposed. With that has come heightened awareness that I am actually in a dream; I have that revelatory "oh come on, this is not possible" moment that tips one off, no matter how consistent the internal logic of the dream may be. (I'm getting to rather enjoy it--sometimes one can be very creative in one's dreams.)