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Definition of Reference listed drug (rld)

Reference listed drug (rld) Definition from Medicine Dictionaries & Glossaries
Drugs@FDA Glossary
A Reference Listed Drug (RLD) is an approved drug product to which new generic versions are compared to show that they are bioequivalent. A drug company seeking approval to market a generic equivalent must refer to the Reference Listed Drug in its Abbreviated New Drug Application (ANDA).  By designating a single reference listed drug as the standard to which all generic versions must be shown to be bioequivalent, FDA hopes to avoid possible significant variations among generic drugs and their brand name counterpart.
  
Source: U.S. Food and Drug Administration, Center for Drug Evaluation and Research. (About)