medication use in pregnancy
Start with the big picture
A central approach is to use the lowest effective dose for the shortest necessary duration and avoid first-trimester exposure when possible. The lesson distinguishes obsolete FDA letter categories from the narrative risk summaries used in the Pregnancy and Lactation Labeling Rule (PLLR), alongside disease-specific guidance. It surveys key decisions across supplements, pain relief, hypertension, diabetes, anticoagulation, seizure disorders, mental health, acne, infections, nausea, vaccines, asthma, and hyperthyroidism. Examples include pregnancy-related cautions with NSAIDs, ACE inhibitors and ARBs, warfarin, valproate, and selected antibiotics, as well as commonly preferred options such as acetaminophen, low-molecular-weight heparin, and pyridoxine with or without doxylamine. Individual treatment decisions still depend on the clinical context and guidance for the condition being treated.
What you'll learn
- Explain how pregnancy-related physiologic changes can alter medication pharmacokinetics.
- Apply general principles for minimizing fetal exposure while treating maternal conditions.
- Distinguish PLLR narrative risk summaries from obsolete FDA pregnancy letter categories.
- Identify selected preferred therapies, cautions, and contraindicated medicines across common conditions.
- Describe the roles of essential supplements and pregnancy-specific vaccine guidance.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
