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Instead, your levels may rise due to: taking too many supplements or taking them for too long having liver conditions that challenge excretion, like alcoholic liver disease, cirrhosis, or hepatitis having kidney disease A 2021 article notes that too much oral or injected vitamin B12 is not associated with any significant side effects or harm
Data shows intranasal administration provides convenience, rapid onset without requiring reconstitution, and eliminates the common problems of injection-related pain and site reactions
PMID: 40005371
Avoiding sugar is critical for kidney health
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