Does Cholecalciferol Interact With Ferrous Sulfate?
WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6.
Severity: Moderate
Severity basis: boxed warning (keywords: boxed warning). Combining Cholecalciferol (Vitamin D supplement) and Ferrous Sulfate (Oral iron supplement) is classified as a moderate interaction.
What to Do
Use this combination with caution. Your prescriber may monitor you more closely or adjust doses.
From the FDA Label
WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6.
Source: FDA structured product labeling (set_id 038fe2e7-dc16-485c-b5fb-746db7231347).
Check these against your full medication list in our free Interaction Checker
This information is educational — not medical advice.
This page is provided for general educational purposes and summarizes publicly available data from sources such as the U.S. Food & Drug Administration. It is not a substitute for the judgment of a licensed clinician and should not be used to start, stop, or change any medication. It may be incomplete or out of date, and individual circumstances vary. Always talk with your prescriber or pharmacist about your specific medications and health conditions. If you think you may have a medical emergency, call 911.