what mcg means
miÂ·croÂ·gram (Î³, mcg), (mÄ«'krÅ-gram), It is recommended that, in handwritten material and in computer work, this word be written in full, because both human beings and computers may misread the abbreviation Î¼g as mg and the abbreviation Î³ as g. Alternatively the abbreviation mcg may be used. One millionth of a gram.