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A GGT partially purified from onion showed high substrate specificity toward -glutamyl compounds that are putative intermediates of S -alk(en)yl-L-cysteine sulfoxide biosynthesis, strongly suggesting the involvement of this GGT in the biosynthesis of S -alk(en)yl-L-cysteine sulfoxides (Lancaster and Shaw, 1994)

This is particularly common if you are taking large doses on an empty stomach

Adverse effects: Seek medical advice if you develop any unusual, severe, or persistent side effects or symptoms after taking vitamin B12 supplements

Medical directors need to review protocols, especially if a patient doesn't respond after 4-6 weeks, side effects appear, or new regulations come up

Microglial gene signature reveals loss of homeostatic microglia associated with neurodegeneration of Alzheimers disease

Erel, O