From what I've read, people with severe adrenal fatigue use small doses of hydrocortisone to give their adrenals sort of a vacation.

I slightly over-produce cortisol (had a 24-hour saliva test done) and so I take a couple of astralgus (herb) and relora. The astralgus supposedly evens out your cortisol levels and relora will lower them. Usually I take the relora at night to help with my sleep.

I think it has helped some.