Description:
A substance
that has been tested in the laboratory and has been
approved by the U.S. Food and Drug Administration (FDA) for
testing in people. Clinical trials test how well
experimental drugs work and whether they are
safe to use. An experimental drug may be
approved by the FDA for use in one disease or condition but
still be considered investigational in other diseases or
conditions. Also called IND, investigational agent, investigational drug, and investigational new drug.
