I also drink herbal tea about an hour before sleep, alternating between chamomille and Relaxing Tea by Triple Leaf which contains the usual valerian, skullcap, passion flower. It has helped me get 4-6 hours at a clip instead of 2-3. Also noticed it helps quiet my mind when I do get up for the bathroom making it easier to fall back asleep. However, there are those nights when I just cannot get comfortable due to stiffness/tremors to fall back asleep.

Eric