My husband's adrenals were not up to par and we found he was low on Vitamin C and B5. These two are major contributors to adrenal health. So he takes Vitamin C (ascorbic acid/buffered) with bioflavanoid and additional B5.
He also takes other vitamins/minerals and EFAs.
There's a pretty good book we had called Adrenal Fatigue; the 21st century stress syndrome by james Wilson. He also has a website containing much of the same info (as well as product which have not tried) It's
www.adrenalfatigue.org
Marlene