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Ferrous Sulphate

Last updated on 02/08/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Ferrous Sulphate

ALTERNATIVE NAME: Iron(II) sulphate, Iron (II) sulfate, Ferrous sulfate

CHINESE NAME: 硫酸亞鐵

BRAND NAMES IN HONG KONG: Ferasul, Iron-200, Super-Fe

DRUG CLASS: Supplements 

SUB CLASS: Minerals & Electrolytes

USED FOR: Iron deficiency with anaemia

AVAILABLE DOSAGE FORMS:
– 300mg (tablets)
– 200mg (sustained-release tablets)
– 167mg (enteric-coated tablets)

What is Ferrous Sulphate for?

It is a formulation containing iron(II). It can supply iron to patients with iron-deficiency and/or anemia. For a 325mg tablet, it can have 65mg elemental iron. It can replenish iron storage and to prevent/treat iron deficiency anemia.

How to use it?

Ferrous Sulphate is available in tablets, enteric-coated tablets and sustained-release tablets for oral use. Do not chew, divide or break the enteric-coated or sustained-release tablets. It should be taken on an empty stomach for better absorption. However, if the gastrointestinal side effects cannot be tolerated, take with meals. The doses below are calculated in elemental iron. Multiply the dose by 5 to calculate how much Ferrous sulphate you need to consume.

Iron-deficiency anemia
Elderly
15-50mg daily.

Adult
For prevention, 65mg daily. For treatment, 65-200mg daily in 2-3 divided doses.

Infants at 4-6 months of age and receiving only human milk
For prevention, 1mg/kg daily. For treatment, 3-6mg/kg daily in 3 divided doses up to 200mg daily.

Infants at 6 months to 2 years of age
For prevention, 10-12.5mg daily for 3 consecutive months. For treatment, 3-6mg/kg in 3 divided doses up to 200mg daily.

Child at 2-5 years of age
For prevention, 30mg daily for 3 consecutive months. For treatment, 3-6mg/kg in 3 divided doses up to 200mg daily.

Child above 5 years of age
For prevention, 30-60mg daily for 3 consecutive months. For treatment, 3-6mg/kg in 3 divided doses up to 200mg daily.

What are the side effects of Ferrous Sulphate?

Common side effects of Ferrous sulphate include metallic taste, dark stool, nausea and vomiting. Ferrous Sulphate can cause tooth darkening.

Who should not take Ferrous Sulphate?

– Patients with iron overload
– Patients with failure in distributing iron in the body (instead of lacking)
– Patients with non-iron deficiency anemia (e.g. Vit. B12/ Folic acid deficiency)
– People allergic to Ferrous Sulphate and any components in the formulation

Pharmacist Tips:

– Iron supplementation has to be taken until body iron storage is secured. Even if anemia does not occur anymore, patients are required to continue his/her therapy for some more months.
– If oral supplements are intolerable, patients may need to use Injections.
– Patients undergoing hemodialysis can use iron supplements by injection.
– Consume food rich in iron like beans, salmon, tuna and red meat.
– Multiply the elemental iron dose by 5 to calculate how much Ferrous sulphate you need to consume.

Common dosing schedule:
Ferrous sulphate should be taken 1-3 times daily. It should be taken on an empty stomach for better absorption. However, if the gastrointestinal side effects cannot be tolerated, take with meals.

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Ferrous Sulphate may interact with:
Levothyroxine
– Penicillamine
Zinc
– Antacids, e.g. Aluminium hydroxide, Magnesium hydroxide

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Ferrous Sulphate in Hong Kong?

In Hong Kong, Ferrous Sulphate is an over-the-counter medicine and can be purchased without a prescription from any retail outlet in Hong Kong. This includes grocery stores, convenience stores, medicine shops, and pharmacies. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk

Need more information?

For detailed information about the use of Ferrous Sulphate in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.