About ferrous sulfate
Oral iron replacement
Used for
- Prevention and treatment of iron-deficiency anemia
Usual adult dose
Usually 100–200 mg elemental iron daily, in one or divided doses; dosing varies by product and guidelines.
Usual dose in children
Dose depends on age and weight; commonly 3–6 mg/kg elemental iron daily for iron-deficiency anemia.
Common side effects
- Nausea or abdominal discomfort
- Constipation or diarrhea
- Dark stools
- Teeth staining if liquid iron is used
Important warnings
- Keep out of children’s reach; overdose can be fatal.
- Iron can interfere with absorption of several medicines.
- Avoid use with iron overload disorders unless prescribed.
- Dark stools are common; seek assessment for tarry stools or bleeding.
Pregnancy
Iron is commonly used during pregnancy when needed; dose depends on iron status and clinical guidance.
Breastfeeding
Generally compatible with breastfeeding at usual doses.
Interactions
- Reduces absorption of levothyroxine, tetracycline and quinolone antibiotics.
- Antacids, calcium, tea and coffee can reduce iron absorption.
- Iron may interact with bisphosphonates and levodopa.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.