Reference Daily Intake
The RDI is used to determine the Daily Value (DV) of foods. In the United States and Canada, this information can be found on food labels (as % DV). The  Food and Drug Administration (FDA) and by Health Canada require that this information is present. The labels "high", "rich in", or "excellent source of" may be used for a food if it contains 20% or more of the RDI. The labels "good source", "contains", or "provides" may be used on a food if it contains between 10% and 20% of the RDI.