Iron Supplementation Guidelines for Anemia

Diagnosis and Treatment

The Centers for Disease Control and Prevention recommends that a hemoglobin level of 9.1 g/dL and hematocrit of 29.9% meet diagnostic criteria for anemia in nonpregnant women 3
The American College of Obstetricians and Gynecologists suggests that anemia severity should be assessed, and treatment should be initiated when hemoglobin levels are below 9.0 g/dL in pregnant women, but this patient's level warrants treatment 3
Oral iron supplementation at 60-120 mg elemental iron daily is recommended to correct anemia and replenish body stores, as stated by the World Health Organization 1, 2
Treatment with oral iron should continue for three months after correction of anemia to replenish iron stores, as recommended by the National Institutes of Health 1, 2

Hemoglobin levels should be rechecked after 3-4 weeks of treatment, with an expected increase of approximately 2 g/dL, according to the American College of Physicians 1, 2
If hemoglobin fails to rise by 1 g/dL after 4 weeks, further evaluation including mean corpuscular volume (MCV), red cell distribution width (RDW), and serum ferritin should be considered, as suggested by the Centers for Disease Control and Prevention 3

Common side effects of oral iron include nausea, constipation, and diarrhea, but these are typically mild and transient, as reported by the World Health Organization 1, 2
If oral iron is not tolerated, alternative formulations such as ferrous gluconate or fumarate instead of sulfate, or liquid preparations should be tried, as recommended by the American Gastroenterological Association 1, 2

Treatment failure is most commonly due to poor adherence, so compliance should not be assumed, as stated by the National Institutes of Health 1, 2
Parenteral iron should only be used after failure of at least two oral preparations, as recommended by the American College of Physicians 1, 2