Glenferr FCM 50 mg Injection Glenferr FCM 50 mg is an injectable iron preparation containing ferric carboxymaltose. It is used to replenish iron levels in people with iron deficiency or iron-deficiency anemia, particularly when oral iron is not suitable or does not provide an adequate response. The medicine delivers iron directly through intravenous administration, allowing the body to restore iron stores needed for healthy hemoglobin and red blood cell production.