This product is so wonderful for me. I take it around 4am in the morning and seems to start working around 5:30, I have anxiety every morning and this is very helpful. It works for about 2 and 1/2 hours for me . It also has scullcap which is very helpful in keeping estrogen down when I have pms. It has a very relaxing feeling, but not drowsy, although one time I combined this with calm forte and I was too drowsy to drive!