Perinatal pharmacology and safety profiles

Area of Science:

• Pharmacology
• Maternal-Fetal Medicine
• Pharmacokinetics

Background:

• Medications are inadequately evaluated for use during pregnancy, delivery, and postpartum.
• Package inserts often lack clear instructions for these critical periods.
• Concerns exist regarding evidence-based pharmacotherapy for pregnant and lactating individuals.

Purpose of the Study:

• To describe general patterns of pharmacokinetic changes during pregnancy and postpartum.
• To emphasize placental drug transport and lactation.
• To illustrate the relevance of these changes using examples of medications for neurologic conditions.

Main Methods:

• Review of pharmacokinetic principles (absorption, distribution, metabolism, elimination) in pregnant and postpartum states.
• Focus on drug transfer across the placenta.
• Discussion of drug excretion into breast milk.

Main Results:

• Significant alterations in drug pharmacokinetics occur during pregnancy and postpartum.
• Placental drug transfer varies, posing risks to the fetus.
• Drug concentrations in breast milk can affect the infant.

Conclusions:

• Understanding pharmacokinetic changes is crucial for safe and effective pharmacotherapy in pregnant and postpartum individuals.
• Evidence-based decisions require balancing maternal/fetal risks with disease management.
• Further research and clearer guidelines are needed for medication use in these populations.