glutathione is the body's in Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Carlson Glutathione Booster®, 180 ct
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10.1007/s12031-020-01754-x 138 RavingerovT.KindernayL.BartekovM.FerkoM.AdameovA.ZohdiV.et al (2020)
Potential for Nutrient Imbalance: Overuse of antioxidants like glutathione may potentially affect natural oxidative balance in the body, although this is rare with proper medical supervision

Other small studies have also found elevated homocysteine in migraine patients, likely reflecting B12 deficiency as well
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a journal of cerebral circulation
