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Most side effects resolve within the first one to two weeks of use
While sufficient amounts are often obtained through diet alone, some conditions prevent the body from using Vitamin B12 to ensure their body functions normally, especially in older adults and You may need Vitamin B12 supplements if you have poor nutrition, HIV, cancer, pregnancy, celiac disease, alcoholism, stomach problems, age and vegan diets that restrict animal products and rely on plant foods
Medical supervision helps determine the most appropriate timing for individual situations
Pale skin, weakness, tiredness, and lightheadedness
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