Anaemia, iron deficiency

D50.0/D50.8/D50.9

DESCRIPTION

A common cause of anaemia in young children and women of childbearing age.
A full blood count showing a low MCV suggests the diagnosis of iron deficiency anaemia. A full blood count is not required for children, unless referral criteria above are present.
Note: Iron deficiency anaemia in children > 5 years of age, adult males and non-menstruating women, is generally due to occult or overt blood loss. Refer all cases for investigation and treatment of the underlying cause.

GENERAL MEASURES

  • Identify and treat the cause.
  • Exclude other causes. See referral criteria in Anaemia.
  • Dietary advice:
    • Avoid drinking tea/coffee with meals.
    • Increase vitamin C intake (e.g. citrus fruit, orange juice, broccoli, cauliflower, guavas, strawberries) with meals to increase iron absorption from the diet.
  • Increase dietary intake of iron. Foods rich in iron include: liver, kidney, beef, dried beans and peas, green leafy vegetables, fortified wholegrain breads, cereals.

MEDICINE TREATMENT

Treatment

Treat underlying cause.

Children< 5 years of age

  • Iron, oral, 1–2 mg/kg/dose of elemental iron 8 hourly with meals.
    • Follow up Hb after 14 days.
    • Hb lower than before: refer.
    • Hb the same/higher: continue treatment and repeat after another 28 days.
    • Continue treatment for 3 months after Hb normalises.

Empiric treatment for worms (this will not treat tapeworm)

  • Mebendazole, oral.
    • Children 1–2 years: 100 mg 12 hourly for 3 days.
    • Children > 2–5 years: 500 mg as a single dose.

OR

  • Albendazole, oral, single dose.
    • Children 1–2 years: 200 mg as a single dose.
    • Children ≥ 2 years and adults: 400 mg as a single dose.

LoEII [1]

Adults

  • Ferrous sulfate compound BPC (dried), oral, 170 mg (± 55 mg elemental iron) 12 hourly with meals.

LoEIII[2]

OR

  • Ferrous fumarate, oral, 200 mg (± 65 mg elemental iron) 12 hourly.
    • Do not ingest with tea, antacids or calcium supplements/milk.
    • Doses should be taken on an empty stomach, but if gastrointestinal side effects occur doses should be taken with meals
    • Continue with treatment for 3–6 months once Hb has normalised to replace iron stores.

Follow the patient after one month of treatment and Hb should rise by at least 2 g/dl in 4 weeks in the adherent patient without ongoing blood loss.

If daily iron is poorly tolerated (e.g. epigastric pain, nausea, vomiting and constipation), intermittent iron supplementation may be administered:

  • Ferrous sulphate compound BPC (dried), oral, 340 mg per week, (± 110 mg elemental iron), with meals.

OR

  • Ferrous fumarate, oral, 400 mg per week (± 130 mg elemental iron).

LoEI [3]

Pregnant women
See Anaemia in pregnancy

Consider the following if there is failure to respond to iron therapy:

  • non-adherence,
  • continued blood loss,
  • wrong diagnosis,
  • malabsorption, or
  • mixed deficiency; concurrent folate or vitamin B12 deficiency.

LoE111[4]

Prophylaxis

Infants from 6 weeks (Z29.2)
If < 2.5 kg at birth:

  • Ferrous lactate, oral, 0.6 mL daily (provides ± 15 mg elemental iron) until 6 months of age.

OR

  • Ferrous gluconate syrup, oral, 2.5 mL daily (provides ± 15 mg elemental iron) until 6 months of age.

LoEIII[5]

Pregnant women

See: Antenatal supplements.

Elemental iron per preparation

Ferrous gluconate elixir 350 mg/5 mL 40 mg elemental iron per 5 mL 8 mg elemental iron per mL
Ferrous gluconate syrup 250 mg/5 mL 30 mg elemental iron per 5 mL 6 mg elemental iron per mL
Ferrous lactate drops 25 mg/mL 25 mg elemental iron per mL 1 mg elemental iron per 0.04 mL
Ferrous sulfate compound BPC (dried) tablets 170 mg ± 55 mg elemental iron per tablet ± 55 mg elemental iron per tablet
Ferrous fumarate 200 mg ± 65 mg elemental iron per tablet ± 65 mg elemental iron per tablet

LoEIII [6]


CAUTION
Iron is extremely toxic in overdose, particularly in children.
Store all medication out of reach of children.


REFERRAL

  • As in Anaemia
  • Children > 5 years of age, men and non-menstruating women.
  • No or inadequate response to treatment.