Also found in: Dictionary, Thesaurus, Medical.
Related to drug idiosyncrasy: cumulative effect
drug idiosyncrasy[¦drəg ‚id·ī·ō′siŋ·krə·sē]
A peculiarity of constitution that makes an individual respond differently to a drug or treatment than do most people.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.