Our paper, led by Stephanie Martin, on the use of formative research to develop behavior change strategies to promote iron-folic acid and calcium supplementation in pregnancy is now available in Maternal and Child Nutrition! In brief, we conducted in-depth interviews with pregnant and postpartum women and health workers in western Kenya to identify barriers and facilitators to adherence to prenatal micronutrient supplements. We then used our findings to develop a behavior change strategy with activities targeting the health system, health facility, community, household, and individual levels. This research and strategy are presented here, and the behavior change materials can be viewed here and above.