Regular vitamins or synthetic vitamins are products from a lab or from farms that use a lot of chemicals. In contrast, organic vitamins are derived from safe whole foods grown on organic farms. Correspondingly, these farms do not use any chemicals during the farming process. Sometimes referred to as natural, the organic multivitamins are free from herbicides and pesticides that may be available in regular vitamins. Eventually, organic brands should have certification from the U.S. Department of Agriculture.