I was also having the fatigue and brain fog problem in addition to waking up early in a nervous state and unable to return to sleeping. On another website with folks who are super-sensitive I found some with the same problem taking two supplements that I am now taking with a lot of success too. These are both produced by “NOW” supplement company and one is “True Calm” and the other is the “Melatonin 5 mg”. You can find both at the local health food store but much cheaper on Amazon. Sure has helped me a lot and beats trying drugs/meds from the doctor!