Final answer:
To improve the absorption of ferrous sulfate, it should be taken with orange juice because its high vitamin C content can enhance iron solubility and absorption in the gut.
Step-by-step explanation:
To promote absorption of ferrous sulfate, a medication for treating iron deficiency anemia, it is recommended to take the medication with a substance that has an acidic pH, such as vitamin C or ascorbic acid. A suitable option to take ferrous sulfate with is orange juice, which is high in vitamin C and can help convert ferric iron (Fe³+) into the more soluble ferrous state (Fe²+), facilitating better absorption in the duodenum and proximal jejunum. In contrast, substances like milk, coffee, or yogurt can inhibit iron absorption due to their high calcium content or the presence of certain compounds that bind to iron.