Aleve (naproxen) is generally not recommended during pregnancy, especially after 20 weeks gestation. The use of Aleve or other nonsteroidal anti- inflammatory drugs (NSAIDs) during the second half of pregnancy can cause serious risks such as rare but serious kidney problems in the fetus, low levels of amniotic fluid (oligohydramnios), premature closure of a vessel in the baby's heart (ductus arteriosus), and potential harm to fetal development. Due to these risks, the FDA advises avoiding NSAIDs like Aleve after 20 weeks of pregnancy. In early pregnancy (first trimester), there may be a small increased risk of miscarriage and congenital defects with high doses, so Aleve should be used only if clearly necessary and under medical supervision. Overall, safer alternatives such as acetaminophen are usually recommended during pregnancy for pain relief. Always consult a healthcare professional before taking Aleve or any medication while pregnant.