First-Pass Elimination Basic Concepts and Clinical Consequences
@article{Pond1984FirstPassEB, title={First-Pass Elimination Basic Concepts and Clinical Consequences}, author={S. Pond and T. Tozer}, journal={Clinical Pharmacokinetics}, year={1984}, volume={9}, pages={1-25} }
SummaryFirst-pass elimination takes place when a drug is metabolised between its site of administration and the site of sampling for measurement of drug concentration. Clinically, first-pass metabolism is important when the fraction of the dose administered that escapes metabolism is small and variable. The liver is usually assumed to be the major site of first-pass metabolism of a drug administered orally, but other potential sites are the gastrointestinal tract, blood, vascular endothelium… CONTINUE READING
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