Diet Supplement Center is an online supplement resource regarding dietary supplements, and its sub categories of nutritional and  herbalsupplements, as well as vitamin and minerals. A dietary supplement in definition does the following:

• is intended to supplement the diet;
• contains one or more dietary ingredients (including vitamins; minerals; herbs or other botanicals; amino acids; and other substances) or their constituents;
• is intended to be taken by mouth as a pill, capsule, tablet, or liquid; and
• is labeled on the front panel as being a dietary supplement.