I've always had trouble sleeping, but for the last few months it has mainly manifested as night waking. I read that high cortisol levels could cause that problem, which made sense to me, considering other aspects of my life. I tried a product called Seriphos, a version of phosphatidylserine. I tried it at night and, after a few hours, woke up with an uncomfortable energy. So I took half a dose in the morning, and while I felt that it made me "sharper" during the day (I'm a writer so that's a good thing!) after a few nights, my sleep became prgressively worse. Does anyone have experience with these supplements? If so, any advice? I hate when I find something that works for one aspect of my life, but not another!