Daavon Women Sports PerformanceWhat is a multivitamin? A multivitamin is a mixture of vitamins, minerals, and other nutrients that supplement the diet. Over the past several years data is showing that our food no longer contains enough of the essential vitamins and minerals that our bodies rely on every day. Low levels of vitamins can cause problems with metabolism, digestion, sleep, mental focus etc. How to take a multivitamin? Multivitamins should be taken at a minimum every day.