glutathione reduced 500 mg jarrow Formulas, Inc. Vegan 120 Veg Caps : Target jarrow formulas glutathione reduced Jarrow
Description
In particular, the iodothyronine deiodinases (DIO) and glutathione peroxidases (GPX1) play an essential role in thyroid physiology and safeguard against diseases caused by immunological dysregulation and oxidative stress (OS) [6]

The leading search terms were: oxidative stress, reactive oxygen species, thyroid disease, nutritional antioxidants, thyroid-gut axis, gut microbiome, and antioxidant probiotics

Research suggests immune-modulating effects, including support for natural killer cell activity and T-cell function [3] [12]

Another option to consider is Cyanocobalamin as an oral supplement
[DOI] [PubMed] [Google Scholar] 37.Riederer M, Erwa W, Zimmermann R, Frank S, Zechner R
