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However, because B12 plays a role in metabolism (converting fats and carbohydrates into energy), ensuring adequate levels can support your bodys efficiency and provide an energy boost that makes maintaining a healthy diet and consistent exercise routine easier
Megadoses of up to 2,000 mcg are considered safe in treating a B12 deficiency, but its best to avoid excessive amounts of any vitamins, especially when not needed
food and dietary supplement labeling purposes, the amount in a serving is expressed as a "percent of daily value" (%DV)
The 2017 JAMA study on unapproved performance-enhancing products found that more than half of the products tested contained substances not listed on the label
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