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Some of the symptoms of B12 deficiency are: Weakness, tiredness, or lightheadedness

Follow the Rule of 15: consume 15 grams of fast-acting carbohydrate (such as 4 glucose tablets or 4 ounces of fruit juice), wait 15 minutes, and recheck blood glucose

General observations: High doses may cause mild digestive upset in some people Sensitive individuals occasionally report headaches or restlessness People with kidney conditions or rare genetic disorders should be cautious If youre pregnant, elderly, managing chronic illness, or already taking medications, its usually sensible to discuss supplementation with a qualified professional

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