Tag: High dose vitamin b12

According to the National Institutes of Health, excessive intake of vitamin B12 is typically not toxic for healthy individuals due to its water-soluble nature. However, when taken in high doses, especially through supplements or injections, it can lead to mild digestive discomfort, including diarrhea. It is also important to note that, in a surprising turn, a deficiency of vitamin B12 can also manifest with similar gastrointestinal symptoms.

According to the National Institutes of Health, vitamin B12 does not have a tolerable upper intake level, and high doses are generally considered safe because the body excretes excess amounts. While 500mg of vitamin B12 is significantly more than the Recommended Dietary Allowance (RDA) of 2.4 mcg, your body absorbs only a small percentage of this high dose.