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The decision to add B12 is made by individual prescribers working with compounding pharmacies, which is why B12 only appears in compounded formulations
It converts melanin from its darker form (eumelanin) to a lighter form (pheomelanin), resulting in a lighter skin tone over time
doi: 10.1007/s00204-023-03476-6 67 QiuBZandkarimiFBezjianCTReznikESoniRKGuWet al
Yes, some individuals experience mild abdominal cramping, bloating, or discomfort when taking vitamin B12 supplements, particularly on an empty stomach or with higher-dose formulations
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