I take multi vitamin called Super Supplemental and it contains B vitamins.

I found that I cannot take this muti more than 2 days in a row (I have to skip every third day) because the B vitamins in it make me sleep too lightly.

It's well known that Bs make you dream more and can interfere with deep sleep cycles if taken in high amounts. Unfortunately, I'm particularly sensitive to everything so I have to be careful.