Vitamin B12 Tolerable Upper Intake Level

Table 1 lists the current rdas for vitamin b12 in micrograms mcg.
Vitamin b12 tolerable upper intake level. Food and nutrition board institute of medicine in the us. Tolerable upper intake levels ul vitamins riboflavin b3 b6 b9 b12 and others. Maximum daily intake unlikely to cause adverse health effects.
The scf did not have sufficient time to adopt opinions for the following vitamins and minerals. Because it s relatively safe no tolerable upper intake level ul has been set for. A tolerable upper intake level ul is the maximum daily dose unlikely to cause adverse side effects in the general population.
Vitamin b12 is a water soluble vitamin meaning that your body excretes what you don t need in your urine. Vitamin b12 is thought to be safe in amounts much higher than the rda. No tolerable upper intake level ul has been established for b12 due to its low level of toxicity.
Tolerable upper intake level ul. For infants aged 0 to 12 months the fnb established an ai for vitamin b12 that is equivalent to the mean intake of vitamin b12 in healthy breastfed infants. In fact no tolerable upper intake level has been set by the national academy of medicine.
A study released in 2020 raised questions as to whether too much b12 could result in a risk for early death. Source of intake should. F nd not determinable due to lack of data of adverse effects in this age group and concern with regard to lack of ability to handle excess amounts.
Vitamin c chloride fluoride iron phosphorus potassium. Since b12 is a water soluble vitamin it s generally considered safe even at high doses. Opinions on tolerable upper intake levels of individual vitamins and minerals.