It is definitely important to rotate foods with adrenal fatigue so that allergies dont develop. I don't believe that you can be addicted to vitamins because your body either assimilates them or excretes them. I do believe and say from experience that glandulars, cortef definitely can become addictive as they were to me. I don't think that you can really do a glandular for a couple days on and off though, I think it is really an all or nothing thing. By switching it on and off I think you are just confusing and further taxing your adrenals. Just my thoughts.