If you are still having symptoms of underactive Thyroid even though you are taking Thyroid supplementation there are several possible reasons for this. Your dose or type of thyroid may be wrong for you, or you are not taking the supplement on an empty stomach. All the hormones must be balanced, not just the thyroid. A common coexisting issue is low functioning adrenals. The stress, poor sleep, toxins, drugs, etc, that injured your thyroid will often have injured your adrenal glands at the same time. You can test this by doing a 24 hour saliva adrenal stress profile.
Dr. Christine Blakeney