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& Kulka, M
The MHRA advises checking B12 levels in patients taking metformin who develop symptoms of deficiency or have risk factors, with periodic monitoring in at-risk patients
However, patients with severe sulfur sensitivities or specific genetic mutations affecting sulfur metabolism (such as CBS gene upregulations) should consult their healthcare provider before initiating supplementation, as they may need to process sulfur pathways carefully
Naturally present in skin
2025 Jul 12;44(7):116014
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