I have Hashimoto's and take 25mcg of levothyroxine. When I take it I feel awful so my endocrinologist ordered an ACTH stimulation test. My basal cortisol level was low...only 4, but it increased to 20 at 30 minutes and 24 at 60 minutes. I still feel sick so she decided to prescribe HC once a day for me for a replacement dose. Is this normal protocol? She hasn't said anything about me weaning off of it.