This WHO guideline is intended to help member states make evidence-informed decisions on the appropriate nutrition actions to improve the nutritional status of pregnant women. The guideline is intended for a wide audience, including governments, nongovernmental organizations, health care workers, scientists, and donors involved in the design and implementation of micronutrient programs and antenatal care services and their integration into national and subnational public health strategies and programs. The guideline states that routine use of multiple-micronutrient powders during pregnancy is not recommended as an alternative to standard iron–folic acid supplementation during pregnancy for improving maternal and infant health outcomes.