Tag: B12 daily limit

According to the National Institutes of Health, there is no established Tolerable Upper Intake Level for vitamin B12 because it has a very low potential for toxicity, with excess amounts excreted through urine. This water-soluble vitamin is generally considered safe, even in high doses, but several factors influence its absorption and safety.

While the recommended daily allowance for vitamin B12 for most adults is just 2.4 micrograms, supplement doses often contain hundreds or even thousands of micrograms. Understanding what is the highest amount of B12 you can take daily is important, though true toxicity from oral supplements is rare.