Pharmacokinetic evaluation in pregnancy is a critical aspect of ensuring maternal and fetal health during the administration of medications. The physiological changes occurring during pregnancy, such as altered blood flow, increased plasma volume, and changes in liver metabolism, can significantly impact drug absorption, distribution, metabolism, and elimination. Understanding these alterations is essential for determining appropriate dosage regimens and minimizing potential risks to both the mother and the developing fetus. Researchers employ various techniques, including pharmacokinetic modeling and population studies, to assess the dynamic changes in drug disposition throughout pregnancy. Additionally, the unique challenges posed by the potential teratogenicity of certain drugs require careful consideration and evaluation. Monitoring maternal drug levels, adjusting dosages, and assessing potential fetal exposure are integral components of ensuring therapeutic efficacy while mitigating potential harm. This comprehensive evaluation contributes to the development of evidence-based guidelines for drug use in pregnant women, promoting safer pharmacotherapy during this critical period.