Its an autoimmune disease in which the immune system produces antibodies that attack the thyroid, causing fibrosis or scarring of the thyroid tissue ( Hashimotos disease is associated with a variety of symptoms, including weight gain, fatigue, hair loss, anemia, constipation, cold intolerance, joint pain, dry skin, mood changes, difficulty concentrating, and more ( In addition to medication, diet and lifestyle modification can help reduce thyroid damage and improve symptoms and overall quality of life in people with Hashimotos
The RDA for selenium 24 is 55 mcg/day but clinically some people feel better with upwards of 100 to 200 mcg a day
2009 Feb;26(2):128-34
Use bacteriostatic water for multi-dose vials
Endocrinology 158 , 26802693 (2017)