Enfamil Fer-In-Sol Iron Supplement Drops are crafted to support the nutritional requirements of your developing infant and toddler. Despite advancements in nutrition that have significantly lowered the rates of iron deficiency and iron-deficiency anemia, this issue still impacts many children across the United States. A single daily dose of Fer-In-Sol Drops delivers a high-quality source of supplemental iron. Produced by the makers of Enfamil formulas, these drops are made under stringent pharmaceutical standards.