US$ 28.84
what are the benefits of taking l glutathione L-Glutathione 250 mg Dietary Supplement Reduced L-Glutathione Double Strength -
Description
According to research, supplementing subjects with 5 mg of folic acid and 250 mg of vitamin B12 for 12 weeks reduced plasma homocysteine levels by 32% in subjects with coronary artery disease [55]

Constipation is not listed as a side effect in UK product information for vitamin B12 supplements or injections

References Pohlandt, F

Activation of Glutathione Peroxidase 4 as a Novel Anti-inflammatory Strategy
