50mcg Q daily. 2 years later , he continues to do well. His dose of Levoxyl is 75 mcg Q daily. It is amazing how this patient's diagnosis of hyperthyroidism was missed for about two years and he was inappropriately diagnosed as having anxiety-depression syndrome. An elevated Free T4 in the presence of a low TSH confirms the diagnosis of hyperthyroidism in the majority of patients.
Graves disease is the most common cause for hyperthyroidism.
Other common causes include Iatrogenic, Toxic multinodular goiter, Toxic solitary nodule, sub-acute thyroiditis, painless thyroiditis, postpartum thyroiditis, drug induced such as Amiodarone. Antithyroid drugs such as Tapazole or PTU should not be used in these conditions . Patient must not be pregnant and should not conceive for the next 6 months. Usually one dose controls hyperthyroidism forever, occasionally a second or third dose is needed Almost all patients become hypothyroid permanently and need a life-long thyroid hormone replacement therapy. Extremely safe, No increased risk for cancer has been documented.