does glutathione help thyroid Hashimoto's Hypothyroidism and Fight Hashimoto's hypothyroidism with glutathione

Yes, B12 injections are generally considered very safe with minimal side effects

Glutathione is decisive in either limitingor preventing the harmful effects induced by free radicals,and canprotect the body from oxidising agents, such as pesticides, hydrogen sulphide, carbon monoxide, heavy metals (mercury, cadmium and chromium), cigarette smokeand many other substances we come in contact withdue to pollution of the atmosphere and of foodstuffs

[2] Risk factors may occur possibly more in elderly people due to impaired intestinal absorption, and in children, premenopausal women, and pregnant women, whose diets are low in animal foods

elik SB, Can H, Szmen MK, et al