Tag: B12 limit

The National Institutes of Health's Office of Dietary Supplements confirms that no Tolerable Upper Intake Level (UL) has been established for vitamin B12 due to its low potential for toxicity. So, what is the maximum limit of vitamin B12, and is it truly safe to take very high doses?

While most vitamins have a Tolerable Upper Intake Level (UL) to indicate a safe ceiling, scientific bodies like the Institute of Medicine have not set a safe upper limit of B12 for healthy individuals. This is primarily because it is a water-soluble vitamin, and the body naturally excretes excess amounts through urine.