I take Melatonin every night, doesn't seem to bother with my heart medications. Once I open my eyes I am wide awake, so I go to bed early, I also like the morning quietness but not to much starting at 4 but I figure from 9 or 9:30 the previous night, I get good sleep. I sometimes fall asleep for an hour or so in the afternoon. Usually when I am watching something on TV. - J