There are multiple symptoms of selenium deficiency, including mood swings, gastrointestinal problems, cirrhosis, fatigue, garlic breath, hair loss, diarrhea and chipping of nails. Many reactions in the body require cofactors, which are often vitamins or minerals. MinRL Essentials contains minerals including selenium that are required for these reactions to occur in a normal physiological matter. To correct selenium deficiency, take (selenomethionine) Selenium