Observational, descriptive, prospective, longitudinal, multicenter, non-interventionist and multicentric study in Mexican subjects diagnosed with mild to moderate iron deficiency anemia (ADH). Main objective:To evaluate the effectiveness and acceptability of LISEFEX® supplement in patients with mild to moderate iron deficiency anemia.Design The minimal risk study, no therapeutic interventions were carried out by the research team. The indication for supplementation with LISEFEX® was made by the treating physician as part of standard clinical practice, while the study was limited to systematic collection of clinical and laboratory information during participant follow-up.