Topic summary

Elimination half-life

Elimination half-life

Extracted from the Wikipedia article Biological half-life.

References

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  3. ^ 144. doi:10.1016/b978-0-12-079035-7.50015-4. ISBN . The elimination half-life measures the kinetics of loss of drug from the body as a whole once all distribution equilibria have been achieved.
  4. ^ 17. doi:10.1016/b978-0-12-815849-4.00001-3. ISBN . S2CID 209258489. The half-life of a drug is the time required for the serum concentration to be reduced by 50%. Once the half-life of the drug is known, the time required for clearance can be estimated. Approximately 97% of the drug is eliminated by 5 halflives, while ~99% is eliminated by 7 half-lives.
  5. ^ . Journal of Veterinary Pharmacology and Therapeutics. 27 (6): 427–439. doi:10.1111/j.1365-2885.2004.00600.x. PMID 15601438. Archived from the original(PDF) on 20 February 2020. Following i.v. administration, the terminal half-life is the time required for plasma/blood concentration to decrease by 50% after pseudo-equilibrium of distribution has been reached; then, terminal half-life is computed when the decrease in drug plasma concentration is due only to drug elimination, and the term 'elimination half-life' is applicable. Therefore, it is not the time necessary for the amount of the administered drug to fall by one half.
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