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Adverse drug reaction
An adverse drug reaction (abbreviated
ADR) is a term to describe the unwanted, negative
consequences sometimes associated with the
use of medications. It is more precise than, and usually
preferred in the medical field, over the term "side-effect"
as these purported "side"-effects may sometimes
While ADR is probably the most precise
term to describe the concept, it is not widely used
in the community since it may be perceived as jargon
and because of the negative-associations with the term
"drug". Alternative terms
with equivalent meaning to ADR include: side-effect,
adverse event, adverse effect, etc.
See Adverse effect (medicine) for the
main article on this subject, which includes adverse
effects of drugs.