effective dose 50


Also found in: Medical.

effective dose 50

[ə¦fek·tiv ¦dōs ′fif·tē]
(pharmacology)
The amount of a drug required to produce a response in 50% of the subjects to whom the drug is given. Abbreviated ED50. Also known as median effective dose.
References in periodicals archive ?
The effective dose 50 (ED50) value; the dose for which 50% of animals fail to climb backward out of the tube within 30 s was calculated by log-probit analysis.

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