negative side effects of l carnitine The bright and the dark sides L-carnitine supplementation: a systematic review | Journal of the International Society of Sports Nutrition negative side effects of l
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Certain congenital conditions, such as hereditary intrinsic factor defects and congenital vitamin B12 malabsorption (Imerslund-Grsbeck disease), can also cause severe vitamin B12 deficiency

doi: 10.3389/fmed.2022.915179

Romero G
In addition, induction of apoptosis mediated by a dysregulated immune system and upstream regulation of inflammatory mediators has been observed by research studies
