Providing in-utero treatments to target specific conditions in the fetus is a relatively new approach in perinatal care, with the vast majority of these treatments being used off-label. The high degree of off-label medication use in the perinatal and neonatal settings raises concern for the safety of both the fetuses and expectant mothers. This report presents two examples of intra-amniotic drug administration based on reported clinical cases. From the ethical framework of medical principlism, we examine the competing ethical duties of (...) autonomy, beneficence, and non-maleficence in this setting. We then lay out three fundamental ethical principles for obtaining informed consent and maximizing clinical benefit. (shrink)