A topic often discussed on here. An excellent article by Dr. Jeffrey Dach in his latest newsletter. PR
"Mainstream endocrinology makes the assumption that a suppressed TSH indicates thyroid excess, and by definition, thyrotoxicosis. This is true for Graves disease and Toxic Nodular Goiter. In Graves disease with thyrotoxicosis, hypercalcemia from rapid bone turnover has been reported. (21,22)
However, for the vast majority of hypothyroid patients taking natural dessicated thyroid (Nature-throid- RLC labs) a suppressed TSH merely indicates adequate treatment dosage with full clinical benefit, and does not correspond with the clinical signs and symptoms (or laboratory findings) of thyroid excess."