Seth D. Yandell, William C. Harvey, Neil J. Fernandes, Patrick W. Barr, Mark Feldman. Thyroid. October 1, 2008, 18(10): 1039-1042
Interestingly, there is also evidence that the statin drug simvastatin (Zocor) can improve Hashimoto's Thyroiditis. Patients with Hashimoto's Thyroiditis were given 20 mg/day of simvastatin for 8 weeks. After 8 weeks, the patients taking simvastatin had increased Free T3 and Free T4 and decreased TSH levels, as well as emphasis of improved immune system modulation and activity.
Gullu S, et. al. "In vivo and in vitro effects of statins on lymphocytes in patients with Hashimoto's thyroiditis." Eur J Endocrinol. 2005 Jul;153(1):41-8