About ferrous sulfate
Oral iron supplement
Used for
- Prevention and treatment of iron-deficiency anaemia
Usual adult dose
Often 100–200 mg elemental iron daily, adjusted to the product and clinical need.
Usual dose in children
For iron deficiency, commonly 3–6 mg/kg/day elemental iron, divided into doses; clinician-directed.
Common side effects
- Nausea or stomach discomfort
- Constipation or diarrhoea
- Dark stools
- Teeth staining with liquid drops
Important warnings
- Keep iron products out of children's reach; overdose can be fatal.
- May cause constipation and dark stools.
- Liquid iron can stain teeth; follow product directions for administration.
- Iron is not appropriate for all anaemias or iron overload.
Pregnancy
Iron is commonly used during pregnancy when needed; dose depends on iron status and local guidance.
Breastfeeding
Generally compatible with breastfeeding when used at recommended doses.
Interactions
- Reduces absorption of levothyroxine and some antibiotics, including tetracyclines and quinolones.
- Antacids, calcium, tea, and coffee can reduce iron absorption.
- Iron may reduce absorption of levodopa and bisphosphonates.
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 It may be incomplete or out of date.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.