I read that for those with CFS with circadian rhythm problems that neither melatonin or light therapy is helpful, according to some study (not sure of the validity of the study though). Anyone here have luck with these treatments? I'm looking specifically for those who don't have insomnia, per se, but just circadian rhythm issues. For me, I sleep just fine, and sleep adequate hours, and have a stable sleep schedule for the most part (not perfect but overall pretty steady). The problem is my body clock seems off and I don't get tired to sleep till much later than would be normal and then wake later too of course. I've always been a night owl but never like it is now. I've tried all sorts of lifestyle methods, etc. to no avail. Sometimes it seemed like vitamin D helped and I'm ramping that back up again, but for now still struggling. I'm considering melatonin but read some bad things about it, including possibility of depression, so I'm not sure I should try it or not. In the past I took Rozarem which is in some way like melatonin and did not do well on it at all, so that is making me nervous too. Anyone else without insomnia but with circadian rhythm problems found success to getting to a more normal sleep schedule? Sorry if I may have asked this before, I can't remember.