"for as long as i can remember, i have had issues with falling asleep and remaining asleep. this occurred in childhood also. it seems to be a family trait. however, my doctor prescribed silenor and what a difference this pill makes! to have always had problems sleeping and then suddenly, a pill changes the problem. over the years i have taken, lunesta, ambien, tylenol pm, melatonin, benadryl...all stopped working within a period of 3-5 months. not so with silenor. i read some posts stating that silenor has caused weight gain. i have not noticed such, but i do not keep a weight scale in my house. for the present, i will only say that for a chronic lifetime insomniac, i wish that i had this pill 44 years ago. age now 49."