system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 25-year-old G1P0 woman at an estimated gestational age of 9 weeks presents for her first prenatal visit following a positive home pregnancy test. She says she missed 2 periods but assumed it was due to stress at work. She has decided to continue with the pregnancy. Her past medical history is significant for migraine headaches, seizures, and asthma. She takes multiple medications for her condition. Physical examination is unremarkable. An ultrasound confirms a 9-week-old intrauterine pregnancy. Which of these following medications poses the greatest risk to the fetus?
assistant
Valproic acid