Ferrograd

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Ferrograd

Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Ferrograd

Quick Facts

Property Description
Active Ingredient Ferrous Sulfate (FeSO4)
Form Prolonged-release tablet (oral)
Pharmacological Class Hematinic agent; Antianemic preparation
Common Use Iron replacement therapy
Origin Synthetic preparation (inorganic iron salt)

What is Ferrograd and Its Pharmacological Identity?

Ferrograd is a specific medicinal preparation classified as a hematinic agent and an antianemic preparation. Its active ingredient is Ferrous Sulfate (FeSO4), a form of an inorganic iron salt that serves as a highly absorbable source of elemental iron. As a single-ingredient product, Ferrograd belongs to the general class of mineral supplements used for focused iron replacement therapy. Iron supplements are a primary approach for addressing depleted iron reserves. The specific brand, Ferrograd, is recognized in medical practice for supporting individuals with diagnosed iron deficiency. Its identity is centered on providing this crucial trace element to the body to correct systemic deficiencies.


Ferrous Sulfate Composition and Prolonged-Release Tablet Form

The Ferrous Sulfate in Ferrograd is delivered in an oral solid dosage form known as a prolonged-release tablet. This formulation is a sophisticated, synthetic preparation engineered to release the active ingredient gradually over time as it moves through the digestive tract. This controlled-release formulation is a differentiating factor compared to immediate-release iron salts. These specialized dosage forms are utilized in managing iron replacement therapy. The specialized form ensures a sustained supply of iron and is designed to help mitigate the gastrointestinal discomfort often associated with the rapid release of high concentrations of the iron compound.


The General Purpose of Iron Replacement Therapy

The general purpose of Ferrograd is to fundamentally support the body's hemoglobin synthesis and erythropoiesis, which is the creation of new red blood cells. By furnishing necessary elemental iron, this antianemic preparation helps restore the body's capacity to build healthy red blood cells. A typical neutral use scenario for this product involves supplementation for individuals with increased iron requirements, such as those with chronic blood loss or elevated physiological needs. This mechanism is crucial for counteracting the systemic effects of generalized iron deficiency by improving the critical process of oxygen transport throughout the body.

Regulatory References

  1. MedlinePlus Drug Information

What side effects are possible with Ferrograd?

Possible Side Effects and Safety Information

Ferrograd (Ferrous sulfate) is an iron supplement associated with documented adverse reactions, primarily affecting the gastrointestinal system.

Common and Clinically Significant Adverse Reactions

The most common adverse reactions are dose-related gastrointestinal disturbances, which include nausea, vomiting, abdominal discomfort or pain, constipation, and diarrhoea. The passage of black faeces is expected and harmless, but it may interfere with tests for occult blood.

Serious Safety Considerations

Regulatory documents emphasize several serious risks:

  • Overdose: Acute iron poisoning is a serious risk, especially in children, and may be fatal. Overdose symptoms include vomiting blood (haematemesis) and rectal bleeding.
  • Local Damage: Because the tablets are prolonged-release, improper administration (sucking, chewing, or holding in the mouth) can cause mouth or oesophageal ulceration and tooth discoloration. Aspiration of the tablet may cause necrosis of the bronchial mucosa, potentially leading to persistent coughing, narrowing of the bronchus (bronchostenosis), and pulmonary infection.
  • Intestinal Obstruction: The inert plastic matrix of the prolonged-release tablet may cause a safety hazard in patients with swallowing difficulties, delayed intestinal transit, or pre-existing intestinal diverticular disease, leading to a risk of ileus (intestinal obstruction).

Safety Restrictions and Monitoring

Ferrograd is contraindicated in conditions of iron overload such as haemochromatosis or haemosiderosis. It should not be used in patients with intestinal obstruction. The medicine must be swallowed whole with water to prevent local tissue damage. Due to the risk of fatal overdose, the product carries a mandatory warning to keep it out of the reach and sight of children.

Overdose and Emergency Response

Overdose and when to seek help

Accidental overdose of iron-containing products like Ferrograd (Ferrous Sulfate) is a serious medical concern and a leading cause of fatal poisoning in children under the age of six.

Documented Overdose Symptoms

Symptoms following an overdose of iron-containing products primarily affect the gastrointestinal system and may include:

  • Nausea
  • Vomiting, which may contain blood (haematemesis)
  • Stomach pain
  • Diarrhoea
  • Intestinal obstruction (ileus)

When to Seek Immediate Medical Help

Urgent medical attention is required in all cases of suspected or confirmed overdose. Time is a critical factor in managing iron toxicity.

Always seek medical advice urgently if:

  • You accidentally take more than one tablet in one day.
  • A child has taken the tablets, regardless of the amount ingested. Iron poisoning can be severe even with relatively small doses for a child.

In case of accidental overdose, contact your doctor or a poison control center immediately. If the person has collapsed, has trouble breathing, is having a seizure, or cannot be awakened, call emergency services (such as 911) immediately.

Therapeutic Uses of Ferrograd

What Ferrograd Treats: Main Uses and Benefits

Ferrograd, which contains ferrous sulfate, may be part of symptomatic management in situations where patients experience distressing symptoms linked to iron deficiency anemia (IDA). This condition is marked by increased physiological stress and systemic imbalance.

Ferrous sulfate is an iron preparation utilized to address iron deficiency anemia. The therapy is considered relevant in conditions where the functional stability of red blood cell production becomes affected. Common indications where supportive relief may be needed include conditions following blood loss, during pregnancy, or due to inadequate dietary intake. The supportive relief may assist with easing symptom clusters related to systemic imbalance, such as the tiredness and fatigue associated with IDA, which interfere with daily functioning. The supplement plays a role in managing functional stability and contributes to easing the overall symptom load during symptomatic periods.

Quick Fact: Relief for Tiredness and Fatigue

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Ferrograd — Official Regulatory Information


Eligibility Scope

Populations for whom use is allowed (as stated in label): Adults and adolescents aged 12 years and over.

Populations for whom use is not recommended (if applicable): Children under 12 years of age; use in breastfeeding mothers is conditional and requires medical consultation.

Populations for whom use is contraindicated: Patients with iron overload syndromes (e.g., haemochromatosis), intestinal obstruction or diverticular disease, anaemias not due to iron deficiency, known hypersensitivity to components, or patients receiving repeated blood transfusions.

Age-related eligibility rules: Use is not recommended for children under 12 years. Use in older adults is permitted but requires special caution.

Condition-specific eligibility rules: Contraindicated in certain intestinal diseases. Caution advised in patients with a history of peptic ulcer, enteritis, or ulcerative colitis.

Pregnancy and lactation eligibility status (if explicitly documented): Must not be taken during the first thirteen weeks of pregnancy; use is permitted only thereafter.

Eligibility-related restrictions: Caution is required for elderly patients and individuals with swallowing difficulties due to the risk of aspiration or esophageal ulceration from the prolonged-release tablet.


Eligibility Classifications (High-Level)

Eligibility severity classification (as defined in official documents): Contraindicated; Not Recommended; Use with Caution/Conditional Use.

Regulatory basis (EMA / FDA / etc.): Summary of Product Characteristics (SmPC) from national health agencies.

Eligibility-context constraints (as defined in official documents): Use must be restricted to confirmed iron deficiency states; restrictions relate to the risks of the prolonged-release formulation.


Resulting Eligibility Structure

Official eligibility statements:

  • The medicine is contraindicated in individuals with a diagnosis of iron overload syndromes, such as haemochromatosis.
  • Use is not recommended for children under 12 years of age.
  • Ferrograd must not be taken during the first thirteen weeks of pregnancy.
  • Caution is required for elderly patients or those with swallowing difficulties due to the specific tablet formulation.

Connection to the overall eligibility profile (2–4 sentences): Official regulatory documents define eligibility for Ferrograd primarily through explicit contraindications that prohibit use in patients with compromised iron metabolism or specific gastrointestinal pathologies. The profile sets clear age and developmental restrictions, formally excluding children under 12 and restricting use during the first trimester of pregnancy, ensuring use is limited to those for whom the labeled product is deemed appropriate and safe.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Ferrograd (Ferrous Sulfate) has an interaction profile characterized by absorption-based pharmacokinetic interactions documented in regulatory labels, which affect the systemic exposure of co-administered substances. Regulatory documents define these interactions as having either a contraindicated status or requiring mandatory timing separation.

Documented Interaction Patterns

Classification Interacting Agents
Exposure-Altering (Decreased Absorption) Quinolone Antibiotics (e.g., Ciprofloxacin), Tetracycline Antibiotics, Levothyroxine, Bisphosphonates, Penicillamine, Levodopa, Methyldopa.
Food & Supplement Interference Tannins (tea/coffee), Phytates (cereals), Dairy products, Antacids, Supplements containing Calcium or Zinc.
Contraindicated Combinations Dimercaprol; conditions involving iron overload (e.g., Haemochromatosis); receipt of repeated blood transfusions.

Administration Timing Requirements

To manage the absorption-based interactions, regulatory labeling mandates specific timing separation rules. For example, Ferrous Sulfate must be separated from oral Tetracycline antibiotics by at least 2 to 3 hours, and from Levothyroxine by at least 2 hours. Similarly, administration must be separated from Antacids and certain foods (milk, tea, coffee) to prevent inhibition of iron uptake. These constraints are applied to maintain adequate systemic exposure for all interacting medicinal products.

Mechanism of Action

How Ferrograd Works: Mechanism of Action

Ferrograd, which contains ferrous sulfate, functions as a source of essential ferrous iron ( Fe^2+). The mechanism centers on replenishing the body's physiological iron pool. Iron is absorbed in the small intestine, primarily in the duodenum, via the Divalent Metal Transporter 1 (DMT1) on enterocytes. Once transported across the cell, the iron is released into the bloodstream and oxidized to ferric iron ( Fe^3+), where it binds to the transport protein transferrin.

Transferrin delivers iron to the bone marrow and other tissues. Within the bone marrow, the iron is incorporated into the heme molecule, a required prosthetic group for the synthesis of hemoglobin. Hemoglobin is the quaternary protein structure in red blood cells that reversibly binds oxygen. This process, known as erythropoiesis, is directly supported by the increased availability of this crucial substrate. The specialized prolonged-release formulation facilitates the gradual and sustained delivery of the iron past the stomach and into the optimal absorption site of the small intestine.

Dosage and Administration Information

How Ferrograd Is Used: Official Administration Guidelines

Ferrograd (Ferrous Sulfate) is an oral medication designed as a prolonged-release tablet to provide iron replacement therapy.

The standard adult regimen for treatment or prevention of iron deficiency states is one tablet daily. Each prolonged-release tablet contains 325 mg of Dried Ferrous Sulfate, which corresponds to 105 mg of elemental iron. For severe or refractory cases, the dose may be increased to one tablet taken twice daily.

Administration and Timing

Ferrograd must be swallowed whole with water. A critical instruction for the prolonged-release format is that the tablet must not be sucked, chewed, or kept in the mouth before swallowing, as this may compromise the controlled-release properties of the tablet.

While iron preparations are generally absorbed best when taken on an empty stomach, the tablet may be taken before meals or during meals depending on the patient’s gastrointestinal tolerance. To avoid potential absorption issues, it should not be taken within one hour before or two hours after consuming substances known to decrease iron uptake, such as antacids, coffee, or tea.

Duration and Specific Populations

Treatment duration is determined by the need to both correct the deficiency and adequately replenish the body’s iron stores. Therapy typically continues for three months after the patient’s blood levels return to normal.

The dosing is the same for older adults as for general adults. Ferrograd is not recommended for children under 12 years of age. If a dose is missed, patients should resume the regular schedule, and the product labeling advises against taking a double dose to compensate.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Ferrograd


Evidence for Use in Treating Iron Deficiency Anemia

Ferrous sulfate, the active ingredient in Ferrograd, was studied for its role in addressing the physiological characteristics associated with Iron Deficiency Anemia (IDA). Randomized Controlled Trials (RCTs) primarily research examined how key blood markers, specifically Hemoglobin (Hb) and Serum Ferritin (which reflects iron stores), changed in adult populations over short study durations (typically 8 to 12 weeks).

Studies report patterns of measured changes in these hematological biomarkers when iron supplementation was observed in the study groups. Research also explored patient-reported outcomes describing perceived discomfort related to IDA, reporting how symptoms evolved, particularly for tiredness and fatigue.


Evidence for Prophylaxis During Pregnancy

Oral iron supplementation was studied in relation to maternal anemia and iron deficiency endpoints during pregnancy. Systematic Reviews and Meta-Analyses research examined data from RCTs that tracked pregnant women. The primary endpoints evaluated were maternal iron status and certain infant outcomes, such as the frequency of low birth weight.

Evidence data show patterns related to measured frequency of maternal anemia at term in the observed populations. However, findings were mixed and certainty remains low when considering specific infant clinical endpoints, as outcomes related to birth weight was observed in some studies to be inconsistent.


Research Gaps and Remaining Uncertainties

Research on long-term effects are not fully established for iron supplementation overall. There is limited information that looks specifically at the durability of the therapeutic effect and the rate at which iron deficiency recurs after successful short-term treatment. Comparative evidence is lacking for many specific, complex subgroups of patients with IDA. The findings describe group patterns, not personal outcomes, and the research does not determine whether an individual will respond similarly to the patterns observed in the clinical trials.

Key Studies & References

  1. Ferrous Sulfate Supplementation Causes Significant Gastrointestinal Side-Effects in Adults: A Systematic Review and Meta-Analysis
  2. Tolerability of different oral iron supplements: a systematic review (includes prolonged-release formulations)
  3. Antenatal iron supplementation (WHO Guidance)

Frequently Asked Questions (FAQ)

Common questions about Ferrograd (FAQ)

Q: How long does it typically take to see an improvement in energy levels after starting Ferrograd?

A: While clinical trials often look at patient-reported outcomes like fatigue and tiredness, official regulatory documents do not specify an exact timeframe for when an individual might perceive symptomatic improvement. Regulatory documents do not contain specific timing information for when an individual patient might perceive a change in symptoms.

Q: Is it necessary to continue taking Ferrograd after iron levels return to normal?

A: Official guidelines state that therapy is typically continued for three months after a patient’s blood markers, such as hemoglobin, have returned to normal. This extended duration is intended to ensure that the body’s iron stores are fully replenished.

Q: Can Ferrograd still be effective if I sometimes miss a dose?

A: Regulatory guidance addresses a missed dose by stating the patient should resume the regular schedule and to avoid taking a double dose to compensate. The overall long-term efficacy impact of occasionally missed doses is not explicitly detailed in the product information.

Q: Does Ferrograd affect the results of any common lab or stool tests?

A: Yes, the product labeling notes that the passage of black faeces is expected and harmless, but this change can potentially interfere with tests designed to detect occult (hidden) blood in the stool.

Q: What types of food are known to interfere with Ferrograd absorption?

A: Official documents describe that iron absorption may be decreased when the tablet is taken with foods and substances containing tannins (found in tea and coffee), phytates (found in cereals), and dairy products. Timing separation between Ferrograd administration and these items is required to optimize iron uptake.

Q: What information is available regarding the safety of using Ferrograd while breastfeeding?

A: Official regulatory documents indicate that the use of Ferrograd in breastfeeding populations is conditional. Use is only permitted following consultation with a medical professional.

Q: Does Ferrograd cause issues with teeth staining like some liquid iron supplements?

A: The safety information notes a risk of tooth discoloration and local tissue damage if the prolonged-release tablet is administered improperly. Compliance with the instruction to swallow the tablet whole is required to prevent these potential issues.

Q: Does Ferrograd cause stomach cramps or pain?

A: Yes, official labeling includes abdominal discomfort or pain and stomach cramps as dose-related gastrointestinal adverse reactions. These effects are typical of oral iron preparations.

Q: Is it normal to feel bloated or gassy after starting Ferrograd?

A: Gastrointestinal disturbances, including nausea, vomiting, abdominal discomfort, constipation, or diarrhea, are among the most frequently reported adverse reactions associated with this type of iron supplement.

Q: Does Ferrograd contribute to heartburn or acid reflux?

A: Some authoritative resources for ferrous sulfate products include stomach discomfort or heartburn among the potential common side effects.

Q: What should I be tracking to know if my iron levels are actually improving with Ferrograd?

A: Clinical success is assessed by monitoring physiological indicators such as Hemoglobin (Hb) and Serum Ferritin. These laboratory tests are the same key markers studied in clinical trials to assess the effect of iron supplementation.

Q: Is there an interaction between Ferrograd and zinc supplements?

A: Yes, regulatory documents list zinc supplements as agents that can interfere with the absorption of iron. Separation of administration time between Ferrograd and zinc supplements is necessary to prevent inhibition of iron uptake.

Q: What is the purpose of the prolonged-release formulation of Ferrograd?

A: The prolonged-release system is designed to allow the iron to be released gradually over several hours to the optimal absorption site in the small intestine. This controlled delivery is intended to help reduce the likelihood of stomach irritation associated with standard iron salt forms.

Q: Does taking Ferrograd with food actually reduce iron absorption?

A: Iron preparations are generally absorbed best on an empty stomach. While the tablet may be taken during meals to improve gastrointestinal tolerance, taking it with food may reduce the overall amount of iron absorbed by the body.

Q: What are the differences between Ferrous Sulfate and other iron salts like Ferrous Fumarate?

A: Ferrous Sulfate and Ferrous Fumarate are different chemical forms of iron salts. These forms contain varying percentages of elemental iron by weight, a factor that contributes to their physiological effect.

Q: Are there specific warnings for elderly patients considering Ferrograd?

A: Official documents state that caution is required for elderly patients or individuals with swallowing difficulties. This caution is due to the specific prolonged-release tablet formulation and the associated risks of aspiration or esophageal ulceration.

Q: Is it safe to consume alcohol while undergoing treatment with Ferrograd?

A: Some authoritative resources mention that, while a specific interaction is not defined, both the iron supplement and alcohol consumption are associated with potential stomach upset. This may exacerbate existing gastrointestinal side effects.

Q: Does Ferrograd need to be stored in a special way or kept away from light?

A: Yes, official labeling specifies that the medicine must be stored at a temperature not above 25 C and must be protected from light and moisture. Always keep it in its original container, tightly closed.

Q: Does the coloring agent in Ferrograd cause any specific non-serious side effects?

A: The product contains the colorant Sunset Yellow FCF (E110). Official warnings note that the colorant may cause allergic-type reactions, including asthma, particularly in individuals sensitive to aspirin.

Q: What is the difference between the iron in Ferrograd and the iron found in food?

A: Ferrograd provides Ferrous Sulfate, which is an inorganic iron salt. Iron found in food exists in two main forms: heme iron (from animal sources) and non-heme iron (from plant sources), which the body processes differently.

Q: Can Ferrograd be taken just to prevent low iron levels?

A: Yes, Ferrograd is officially indicated for both the prevention and treatment of iron deficiency anemia and related iron deficiency states, provided the need has been confirmed by laboratory testing.

Q: What are the signs that Ferrograd is actually working to raise iron levels?

A: The physiological effectiveness of the drug is assessed by monitoring indicators like Hemoglobin (Hb) and Serum Ferritin. These are the same physiological indicators that clinical trials use to assess the effect of iron supplementation.

Q: Is a skin rash considered a common side effect of Ferrograd?

A: Regulatory documents mention that hypersensitivity reactions, which can include a rash, have been reported with the use of Ferrous Sulfate. Gastrointestinal disturbances are among the most frequently documented adverse reactions.

Q: Why might a doctor prescribe Ferrograd specifically over a regular iron tablet?

A: The prolonged-release formulation is a key differentiating characteristic. This specialized delivery system is designed to release the iron gradually, which is intended to reduce the likelihood of stomach irritation and improve patient tolerability compared to standard, immediate-release iron salts.

Q: Do some patients need to take Ferrograd for a year or longer?

A: The label specifies that the duration of treatment is determined by correcting the deficiency and replenishing iron stores. The total duration of therapy is determined by the patient’s clinical response and iron stores, rather than a fixed period.

Q: What is the reasoning behind swallowing the prolonged-release tablet whole?

A: Swallowing the tablet whole is mandatory because it preserves the controlled-release properties of the formulation. Improper use, such as chewing or sucking, compromises the medicine's effect and risks causing local tissue damage, including the risk of esophageal ulceration.

How should Ferrograd be stored and disposed of?

Storage and Disposal of Ferrograd Tablets

The storage of Ferrograd tablets must maintain product stability as defined in the official labeling. The medicine should be stored at a temperature not above 25°C and should be protected from light and moisture. The tablets must remain in the original package, and the container must be kept tightly closed.

Child Safety and Disposal

It is mandatory that this product be kept out of the sight and reach of children at all times, as accidental iron overdose can be fatal. Regarding disposal, Ferrograd should not be thrown into household waste or flushed down wastewater. Unused or expired tablets should be returned to a pharmacist or disposed of through an authorized drug take-back program according to local regulations.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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