Something I just thought about last night. I've been a phone patient with the Clymer Healing Research Center in Pennsylvania for about 7 months. That's where Dr. Poesnecker practiced before his death. I had a short period of time where my early morning cortisol was elevated and their standard protocol for that was for the patient to take a compound called Seriphos. I don't know if the spelling is correct but it is phosphorylated serine.
If you look it up as a product sold on the Internet it will not state that it is helpful for bringing down cortisol but apparently that's what the Clymer clinic has determine through their years of practice. I had no negative reaction to it and then my adrenals seemed to go back to their regular fatigued pattern. At the time the Dr. told me to take one an hour before bed and another right before bed and I could take another if I woke up in the night with symptoms of high cortisol.
Dr. Poesnecker also mentions it in his book Chronic Fatigue Unmasked 2000, which is sold on Clymer's website......http://www.chronicfatigue.org.