I was only taking .5 mg once per day prior to bedtime but that dose was playing hovoc with my central nervous system so I stopped after only 7 months on March 3rd, this year. I say only .5 mg because I see where a lot of folks take or were taking much more than me? Anything more than what I was taking would have put me in a wheelchair, that's how bad it was kicking my CNS. It did help me sleep better but frankly so does over the counter sleep aids with none of the side effects. Best of luck to you!