Not every category here carries the same weight of established research. Unbox Health tests what is inside every product for label accuracy, safety and nutrition, not its efficacy. Folate, iron supplements during pregnancy and calcium have well-established, extensively studied roles in prenatal care. Vitamin D and DHA omega-3s are backed by extensive nutrition research. Protein powders and prenatal vitamins vary by formulation, so dosage decisions rest with your obstetrician/gynecologist.