how to take glutathione properly - an overview What to Avoid When Taking
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While vitamin B12 itself doesnt directly cause gas, some factors related to its intake might contribute to digestive discomfort: 1

Generation of the C1-2 and C3-1 iPSC lines followed institutional IRB and ISCRO guidelines and was approved by the Johns Hopkins University School of Medicine

People with genetic variants that affect methylation (such as certain MTHFR variants) often choose methylcobalamin, although both forms can correct clear deficiency under medical care
Neuroinflammation 20, 104

But these, too, are unregulated, Phillips cautions, and the need to test these products should also be a red flag

You may just be taking more of a bad product
