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Researchers are trying to tease out whether taking additional B12 might help people lose weight

The elements that belong on it are HPLC purity with ultraviolet detection at a wavelength appropriate to the quinolinium chromophore, identity confirmed by nuclear magnetic resonance and by mass spectrometry, an explicit statement of the salt form and counterion, residual solvent content from the synthesis, and water content

Vitamin B12 is a vital nutrient that the body needs for many purposes, and being deficient can lead to health complications

*Correspondence: Weina Li, [email protected] Meng Li, [email protected] These authors have contributed equally to this work This article was submitted to Drug Metabolism and Transport, a section of the journal Frontiers in Pharmacology Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers