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Updated: Mar 22, 2026

Comprehensive Evaluation of the Effectiveness and Safety of Placenta-Targeted Drug Delivery Using Three Complementary Methods
Published on: September 10, 2018
Pregnancy-related pharmacokinetic changes.
Y Tasnif1, J Morado2, M F Hebert3
1Cooperative Pharmacy Program, University of Texas, Rio Grande Valley TX and Renaissance Transplant Institute, Doctors Hospital at Renaissance, Edinburg, Texas, USA.
Pregnancy significantly alters drug pharmacokinetics by changing distribution, protein binding, and enzyme activity. Renal filtration and drug transporter functions are also modified, impacting how drugs are processed and eliminated.
Area of Science:
- Pharmacology
- Obstetrics
- Drug Metabolism
Background:
- Drug pharmacokinetics are crucial for therapeutic efficacy and safety.
- Pregnancy is a physiological state known to induce significant changes in maternal physiology.
Purpose of the Study:
- To summarize the key pharmacokinetic alterations occurring during pregnancy.
- To highlight the impact of pregnancy on drug distribution, metabolism, and excretion.
Main Methods:
- Review of existing literature on drug pharmacokinetics in pregnancy.
- Analysis of physiological changes affecting drug disposition.
Main Results:
- Pregnancy alters drug distribution and protein binding.
- Changes in drug-metabolizing enzyme activity (both increases and decreases) are observed.
- Increased renal filtration and altered drug transporter activity affect renal drug secretion.
Conclusions:
- Pregnancy profoundly impacts drug pharmacokinetics through multiple mechanisms.
- These alterations necessitate careful consideration in drug therapy during pregnancy.
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