Pre-conception herbal medicine doesn't affect the fetus when used appropriately: ① constitutional improvement before pregnancy (1–3 months), ② traditional pre-conception tonics have safety records, ③ confirm pregnancy timing — once confirmed, switch to safe-for-pregnancy prescription, ④ no studies showing fetal harm from pre-conception herbs. Inform your doctor of pregnancy attempts; we use only proven-safe herbs. After pregnancy is confirmed, immediately review prescription with the doctor.