Essentially if i take 250mcg melatonin in the day and dont sleep, that afternoon i start to feel an improvement in my depression and brainfog. I go to bed with my usual 250mcg melatonin and i wake up the next day feeling DRAMATIC improvement in my symptoms.
This is a 5-year-old thread, and it looks like the OP is no longer on PR, but I'm looking more deeply into the serotinin-melatonin side of the IDO metabolic trap, so I'll try to revive the discussion.
There is an old study that measured melatonin (and cortisol) in female FM and CFS patients and some controls. Difficult to know how the diagnoses would compare to today.
Korszun, A., L. Sackett-Lundeen, E. Papadopoulos, C. Brucksch, L. Masterson, N. C. Engelberg, E. Haus, M. A. Demitrack, and L. Crofford. “Melatonin Levels in Women with Fibromyalgia and Chronic Fatigue Syndrome.”
The Journal of Rheumatology 26, no. 12 (December 1999): 2675–80.
They report (as expected) that melatonin is low during the day and builds up over the night starting at 20:00 (8PM). See their Fig. 2 (attached). They conclude there is no reason to supplement melatonin at night.
I cannot vouch for the study, and the figure itself raises questions. Also, there are good points made in this thread about dose levels. But the reason I was attracted to this thread is the OP points to supplementing with melatonin
while awake. I think this is provocative in light of the two different isoforms of TPH (the enzyme at the start of the serotonin pathway), only one of which is substrate inhibited. Textbooks say TPH1 dominates in the pineal where melatonin is synthesized, but when in the light cycle was this measured?
What do you think about this?