- drug half-life
- the time required for the plasma level of a drug to fall to half of a certain measured level.
Medical dictionary. 2011.
drug half-life
Look at other dictionaries:
half-life — The period in which the radioactivity or number of atoms of a radioactive substance decreases by half; similarly applied to any substance, such as a drug in serum, whose quantity decreases exponentially with time. Cf.:half time. biologic half… … Medical dictionary
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half-life — noun Date: 1907 1. the time required for half of something to undergo a process: as a. the time required for half of the atoms of a radioactive substance to become disintegrated b. the time required for half the amount of a substance (as a drug,… … New Collegiate Dictionary
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Context-sensitive half-life — or context sensitive half time is defined as the time taken for blood plasma concentration of a drug to decline by one half after an infusion designed to maintain a steady state (i.e. a constant plasma concentration) has been stopped. The context … Wikipedia
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Drug repositioning — (also known as Drug repurposing, Drug re profiling, Therapeutic Switching and Drug re tasking) is the application of known drugs and compounds to new indications (i.e., new diseases).[1] Contents 1 Drug repositioning 2 See also … Wikipedia
drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… … Universalium
Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… … Universalium
