For example, during a cold or flu or covid, etc.?
Should you take more adrenal cortex or T3 durin... - Thyroid UK
Should you take more adrenal cortex or T3 during illness?
In a healthy person with a healthy thyroid, I think the body reduces its production of T3 during illness.
I don't know anything about the effect of illness on adrenal function.
Just to add, I think the reduction in T3 production during illness is very small.
Personally, I would keep taking my thyroid hormones, whatever they were, at my normal dose, even if I was ill.
I agree with Humanbean.
I haven't had a cold for donkeys' years and I've never had flu nor Covid, but I have had chest/lung infections which are pretty serious as I have lung disease. During these exacerbations I've had short courses of prednisolone and antibiotics (5-7 days) and I have never altered my dose of Levo or T3 or changed my adrenal glandular dose, nor have I felt the need to.