What is mcg in vitamins?

"mcg" is an abbreviation for microgram, a unit of measurement commonly used to quantify very small amounts of a substance. In the context of vitamins, mcg is used to measure the amount of a particular nutrient in a supplement. For example, a vitamin B12 supplement may contain 500 mcg of vitamin B12 per serving. It is important to pay attention to the mcg amounts on vitamin labels to ensure you are getting the proper dosage of nutrients for your health needs.