Introduction: Pregnant women often experience anemia during pregnancy. Efforts to increase intake of Fe tablets by providing reminders via WhatsApp Messenger are a strategic step to increase Hb levels in pregnant women. The research objective was to determine the reasons for low level of compliance among pregnant women regarding the intake of Fe tablet effecting Hb levels thereby increasing the incidence of anemia. The study also detects the im- provement of adherence with the consumption Fe tablets in pregnant women before and after being given reminders via WhatsApp Messenger. Methods: The research was conducted at the KIA Poli Puskesmas Garuda, Bandung City. This type of quantitative research uses pre-experimental design and one group pre-test post-test design. The sample of this study was 100 pregnant women obtained by the Consecutive Sampling technique from 1838 populations. Results: The multivariate results showed that the hemoglobin levels of pregnant women before and after receiving the reminder had an average increase of 9.838. The result of the post-test was 10.452 with p=0.000. Conclusions: There is an influence on the level of compliance of pregnant women in consuming Fe tablets on the incidence of anemia at Garuda Health Center, Bandung City after being given a reminder via WhatsApp Messenger.