insomnia
"I had horrendous insomnia due to a medication.  I would get 2 hrs. sleep and then be wide eyed and wide awake.   Never even yawned or wanted to sleep.  The medication that did this is Guanfacine, an older blood pressure medication.  I am on 7 different meds to attempt to get my B/P down near the normal range.  This medication works for me but to the detriment of my sleep.   I tried everything from over the counter sleep meds to ambient.  The last two worked but I didn't want to become dependent on them.   I finally tried Melatonin.  Even though the research shows that there is  no significant difference in placebo and melatonin, I found it to work.  It takes a large amt. (12g) and about a week or two, then it begins to work. YES!"