Adrenal fatigue is a theory being put into practice and is approached differently by each practitioner to some extent.
Stress that is constant causes strain on the adrenals.
Unfortunately, high doses of vitamin C, very cheap, might do just as well as expensive supplements. There is no study at all on the supplement you mention, in terms of people and clinical trials
Cortisol can be ascertained with a 24 hour urine free cortisol collection.
This will define if you have normal levels.
Adrenal fatigue practitioners play on the variability of secretion during the day.....if you are low all morning you are fatigued, then when it goes high in the afternoon this is a stress response.
I have no doubt that there are ways of resting the adrenals and supporting them, but you would be better off working with a doctor who has a system, is trained, and can treat you through measurement.
One group that does this can be found at www.neuroassist.com.
They can let you know physicians in your area.
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