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Among the treatments, melatonin was the most efficacious, followed by L-cysteine and then glutathione

Individuals with liver disease, elevated liver enzymes, or other hepatic concerns should discuss all supplements, medications, and peptides with their healthcare provider

However, these associations likely reflect underlying disease processes rather than B12 toxicity itselfelevated B12 is often a marker of serious illness rather than its cause

Linus Pauling Institute Oregon State University Reviewed in December 2019 by: Tory M

These may include pain or swelling at the injection site or, less commonly, allergic reactions