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Signs of deficiency include: Fatigue and low energy Memory issues and brain fog Numbness or tingling in the hands and feet Mood swings or depression Pale skin and shortness of breath Supplementing Safely: Dosage and Absorption Tips While B12 is generally safe as its water-soluble (meaning excess is excreted), certain considerations can help you get the most out of your supplement: Sublingual Supplements : These are absorbed directly into the bloodstream, bypassing the digestive system, making them ideal for those with absorption issues

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