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PMID: 34791425 14 Efficacy of sublingual and oral vitamin B12 versus intramuscular administration: insights from a systematic review and meta-analysis
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Although it is rare, too much niacin from supplements could cause red skin, tingling in the face, arms and chest, and itching
There is also some articles with conflicting evidence but i have yet to read those
Contact your local or preferred pharmacy to find out what they can help with.
Its also a fantastic tool for anyone taking a proactive approach to their long-term health and wellness
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