I started LDN in 2008 because I didn't want any more autoimmune diseases. I thought it might help some with my hashimoto's. Little did I realize I could go from 4 grains of Naturethroid to none in less than a year. Please make sure you have your Free T3 and Free T4 checked around three weeks after starting. When I saw my first labs after starting LDN I had a panic attack right in my Docs office I was that hyper! So be aware.
WARNING from lowdosenaltrexone.org: Those patients who are taking thyroid hormone replacement for a diagnosis of Hashimoto’s thyroiditis with hypothyroidism ought to begin LDN at the lowest range (1.5mg for an adult). Be aware that LDN may lead to a prompt decrease in the autoimmune disorder, which then may require a rapid reduction in the dose of thyroid hormone replacement in order to avoid symptoms of hyperthyroidism.