The study focused on eight thyroid traits, including TSH, FT4, and TPOAb levels, as well as four forms of thyroid dysfunction: subclinical hypothyroidism, isolated hypothyroxinemia, overt hyperthyroidism, and subclinical hyperthyroidism
Most importantly, curcumin was well tolerated with no significant adverse effects, which suggested its safe to take over longer time periods
(Penn State Cancer Institute, European Journal of Nutrition, 2014, PMID 24791752) recruited 54 healthy non-smoking adults aged 2872 and administered oral glutathione at 250 mg/day or 1,000 mg/day versus placebo for 6 months
Yes, glutathione is commonly taken daily to maintain consistent cellular levels