Ferrogradumet

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Ferrogradumet

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Method of action: Antianemic, Hematopoietic

Medically reviewed

Rosario Oropesa

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 Ferrogradumet

What is Ferrogradumet? A Foundational Overview

Quick Facts

Property Description
Active Ingredient Ferrous Sulfate (Dried)
Form Modified Release Tablet (Gradumet)
Pharmacological Class Iron Product / Hematinic
Common Use Addressing Iron Deficiency
Origin Synthetic Agent (Inorganic Salt)

What is Ferrogradumet and its Composition?

Ferrogradumet is a synthetic oral Antianemic Agent that functions as a fundamental Iron Product, supplying essential iron to the body. Its sole active ingredient is Ferrous Sulfate (dried ferrous sulfate), an inorganic compound classified pharmacologically as an Iron Salt or Hematinic. This medication is a single-ingredient product, meaning its therapeutic effect derives exclusively from the Ferrous Sulfate compound, which is necessary for core biological functions related to blood health. As a Ferrous Salt, it is one of the most widely used forms of oral iron replacement therapy.


What is the Ferrogradumet Slow-Release Tablet (Gradumet System)?

Ferrogradumet is prepared as a Modified Release Tablet (often described as a Film-Coated Tablet or Filmtab) that uses a proprietary technology known as the Gradumet system. This specific form serves as a key differentiator from conventional iron salts. The Gradumet system is an inert plastic matrix designed to ensure the iron is released slowly and consistently over time. This specialized sustained-release formulation is designed to deliver the active ingredient gradually after oral administration throughout the gastrointestinal tract.


What is the General Purpose of Taking Ferrous Sulfate?

The general purpose of Ferrogradumet is to replenish the body's elemental iron supply to correct imbalances. By providing this essential mineral, the medication supports the creation of hemoglobin, which is crucial for Red Blood Cell Production and the effective oxygen transport capacity of the blood. This action is intended to normalize iron levels and is fundamentally used to address generalized Iron Deficiency and related forms of Anaemia. A typical scenario for its use is in cases where an individual is diagnosed with low iron stores that cannot be adequately corrected through diet alone.

Regulatory References

  1. NIH MedlinePlus

What side effects are possible with Ferrogradumet?

Possible Side Effects and Safety Information: Ferrogradumet

Ferrogradumet (ferrous sulfate), like all medicines, can cause side effects, though not everyone experiences them. The modified-release formulation is designed to minimize gastrointestinal upset. However, side effects relating to the digestive system are the most common.


Common Side Effects

These effects are typically mild and may lessen as your body adjusts to the medication. They may often be managed by taking the tablet with food instead of on an empty stomach.

System Side Effect
Gastrointestinal Nausea, vomiting, abdominal pain or discomfort, diarrhea, or constipation.
Stool Color Darkening or blackening of stools. This is a common and harmless effect due to unabsorbed iron.

Important Safety Warnings

If you experience any of the following, seek immediate medical attention as they could indicate a serious reaction or overdose:

  • Allergic Reactions: Signs include a rash, itching, swelling of the face, throat, or tongue, severe dizziness, or trouble breathing.
  • Severe Gastrointestinal Symptoms: Persistent, sharp stomach pain, vomiting blood or vomit that looks like coffee grounds, or black, tarry, or bloody stools.

Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6 years of age. Ferrogradumet must be kept out of the reach of children. In case of suspected overdose, contact a poison control center or emergency services immediately.


Contraindications and Precautions

Do not take Ferrogradumet if you have conditions involving iron overload (e.g., hemochromatosis) or certain types of anemia not caused by iron deficiency (e.g., hemolytic anemia). Also, inform your healthcare provider if you have pre-existing gastrointestinal issues like a peptic ulcer or inflammatory bowel disease, as iron supplements may worsen these conditions.

Overdose and Emergency Response

Accidental overdose of iron-containing products, such as Ferrogradumet, is officially documented as a leading cause of fatal poisoning in children under six years of age. Overdose requires immediate emergency medical attention regardless of the presence of symptoms, as mandated by regulatory authorities.

The officially documented clinical manifestations of overdose often begin with severe gastrointestinal distress, including bloody vomiting and diarrhea, severe abdominal pain, and lethargy. This initial phase can rapidly progress to severe, life-threatening systemic outcomes, including shock (hypotension), severe metabolic acidosis, and seizures.


Documented Overdose Outcomes Regulator-Mandated Action
Systemic Toxicity (Shock, Seizures, Coma) Seek immediate emergency medical attention or call the poison control center right away.
Delayed Toxicity (Hepatic Necrosis/Liver Failure) Requires mandatory hospital monitoring, even if initial symptoms improve.

Official Regulatory Statements

  • Ingestions exceeding 40 mg/kg of elemental iron are stated in regulatory guidance as an indication for significant intoxication, necessitating mandatory medical evaluation.
  • Deferoxamine is documented as the specific chelating agent used for systematic treatment in severe cases of iron toxicity.
  • Monitoring requirements include measuring serum iron levels and using an Abdominal X-ray (AXR) to detect undissolved, slow-release tablets.
  • Procedural measures described in regulatory documents include consideration of Gastric Lavage or Whole Bowel Irrigation (WBI).

Therapeutic Uses of Ferrogradumet

Main Uses and Benefits of Ferrogradumet

Ferrogradumet is a medication formulated to address specific nutritional deficiencies involving iron. It is primarily utilized for the prevention and treatment of iron-deficiency anemia, a condition where the body lacks sufficient iron to produce adequate amounts of hemoglobin in red blood cells.

Treatment of Iron-Deficiency Anemia

The central application of Ferrogradumet is the restoration of healthy iron levels in individuals diagnosed with iron-deficiency anemia. Iron is a critical component of hemoglobin, the protein responsible for transporting oxygen from the lungs to the rest of the body. When iron stores are depleted, oxygen delivery becomes less efficient, leading to physical symptoms. By providing a concentrated source of elemental iron, this medication helps the body replenish its internal stores and resume normal red blood cell production.

Prevention of Iron Deficiency

In certain clinical scenarios, Ferrogradumet is used as a preventive measure for individuals at high risk of developing a deficiency. This includes populations who may have increased physiological demands for iron or those whose dietary intake is insufficient to maintain necessary levels. It is also used in cases where iron absorption is impaired due to underlying health conditions.

Physiological Benefits

Correcting an iron deficiency through the use of Ferrogradumet can lead to several physiological improvements as iron levels stabilize:

  • Reduction in Fatigue: As hemoglobin levels rise and oxygen transport improves, the persistent exhaustion and weakness often associated with anemia typically diminish.
  • Support for Cognitive Function: Adequate iron levels are necessary for maintaining concentration and cognitive alertness, which can be negatively impacted by low iron stores.
  • Improved Physical Performance: Normalizing iron levels supports muscle function and endurance, allowing for better tolerance of physical activity.
  • Symptom Resolution: Treatment helps alleviate other common signs of deficiency, such as shortness of breath during exertion, dizziness, and paleness of the skin.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Ferrogradumet (ferrous sulfate) is an iron supplement primarily intended for the prevention and treatment of iron-deficiency anemia in adults and children over 12 years of age, and often used in pregnancy after the first trimester. Use should be confirmed by a medical diagnosis of low iron stores.


Who Cannot Use Ferrogradumet?

The medication is not suitable for individuals with certain medical conditions, including:

  • Iron Overload Syndromes: Conditions such as haemochromatosis or haemosiderosis, where there is an accumulation of iron in the body.
  • Hemolytic Anemia: Anemia not caused by iron deficiency.
  • Gastrointestinal Conditions: Active stomach ulcers, inflammatory bowel diseases (like regional enteritis or ulcerative colitis), or intestinal obstruction/diverticular disease.
  • Frequent Blood Transfusions: Patients receiving repeat blood transfusions.
  • Hypersensitivity: Known allergy to ferrous sulfate or any other ingredient in the tablet.

Note: This product is not recommended for children under 12. Always consult a healthcare professional before starting any iron supplement, particularly if you have pre-existing health conditions or are taking other medications, as iron can interact with several drugs.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Ferrogradumet's interaction profile is primarily defined by a pharmacokinetic interaction where the Ferrous Sulfate component interferes with the gastrointestinal absorption of numerous co-administered agents, resulting in a reduction of systemic exposure for one or both substances. Governmental regulatory documents address this by mandating specific administration requirements.


Documented Exposure-Modifying Interactions

Co-administration with tetracycline antibiotics and quinolone antibiotics reduces the absorption and subsequent exposure of both the iron and the antibiotic. A similar reduction in absorption is documented when Ferrous Sulfate is taken with Levothyroxine, certain Bisphosphonates, and Parkinson’s medications, including Carbidopa and Levodopa. Furthermore, agents such as Penicillamine, Methyldopa, and the immunosuppressant Mycophenolate Mofetil also experience reduced bioavailability due to concurrent use with iron.

Iron Absorption Constraints

The systemic exposure of Ferrous Sulfate is decreased by medicines that reduce gastric acidity, such as Antacids and Proton Pump Inhibitors (PPIs). Other compounds, including calcium salts, cholestyramine, and trientine, are also officially documented to reduce iron absorption.

Timing Requirements and Restrictions

Due to these absorption interactions, official regulatory documents mandate a separation of administration time (typically two to four hours) when co-administering iron with agents like quinolones, tetracyclines, and levothyroxine. Furthermore, certain food components, including phytates, oxalates, tea, coffee, and milk, are officially noted to inhibit iron absorption. A pharmacodynamic interaction is documented with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), which may increase the risk of gastrointestinal mucosal irritation.

Mechanism of Action

Ferrogradumet contains dried ferrous sulfate, an oral iron source. Its underlying mechanism involves essential physiological processes related to iron distribution, oxygen transport, and energy metabolism. The Gradumet® system is a modified-release formulation that controls the rate of iron delivery, influencing its intestinal absorption profile.


Regulation of Systemic Iron Homeostasis

This domain covers the absorption and transport of iron in the body. The ferrous sulfate is converted into ferrous ions (Fe^2+), which are primarily absorbed by enterocytes in the duodenum. This process affects the equilibrium of circulating iron, influencing its systemic availability for subsequent uptake by target cells via transport proteins like transferrin.


Engagement in Oxygen Carrier Synthesis

This cluster involves the utilization of iron in key biological pathways. The transported iron is delivered to the bone marrow, where it is incorporated into the heme component of hemoglobin. This promotes the formation of the hemoglobin molecule, a component central to the physiological process of oxygen transport in the blood.


Modulation of Cellular Energy Pathways

This domain addresses the essential role of iron as a cofactor for various iron-containing enzymes. These enzymes, such as cytochromes, are critical components of the electron transport chain, a cascade central to cellular energy production. This engagement facilitates electron transfer within the respiratory chain, a process required for the biosynthesis of adenosine triphosphate (ATP).

Dosage and Administration Information

Ferrogradumet is a modified-release tablet and must be administered strictly by the oral route. The design of this specific dosage form ensures the iron is released over time.

Official Dosing and Administration

Feature Official Instruction
Route of Administration Oral.
Standard Adult Dose One tablet daily (325 mg ferrous sulfate / 105 mg elemental iron equivalent).
Tablet Intake The tablet must be swallowed whole with water. Do not crush, chew, or suck the tablet, as this compromises the sustained-release mechanism.
Timing with Food May be taken on an empty stomach for maximum absorption, or with or after food if stomach upset occurs.
Missed Dose If a dose is forgotten, do not take a double dose to make up for the missed one. Take the next dose at the usual scheduled time.
Treatment Duration Use may continue for several months to ensure body iron stores are fully replenished, often for 3 to 6 months after laboratory values normalize.

Use in Specific Populations

For children under 12 years of age, a physician must be consulted for proper dosing. Similarly, pregnant or nursing patients are advised to seek the guidance of a health professional before using the product.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Ferrogradumet

This overview summarizes the types of clinical research and scientific findings associated with the active ingredient in Ferrogradumet, Ferrous Sulfate, consistent with the scope of authoritative governmental reviews and peer-reviewed scientific literature. This information describes group patterns observed in studies and does not determine whether an individual will respond similarly.


Evidence for Treating Established Iron Deficiency Anemia (IDA)

The evidence base for using ferrous sulfate to correct established Iron Deficiency Anemia (IDA) primarily relies on numerous short-term Randomized Controlled Trials (RCTs) and is synthesized in large Systematic Reviews and Meta-Analyses. Research primarily examined what happens to core blood markers, including tracking changes in Hemoglobin and shifts in Serum Ferritin. Trials also explored the impact on patient-reported outcomes related to physical discomfort, such as scores related to generalized fatigue and daily functioning.

Research monitored participants during the study period and reported measurements related to changes in both Hemoglobin and Serum Ferritin levels over typical observation periods of 8 to 12 weeks. Some research also monitored a parallel pattern of evolution in symptoms, such as changes in scores assessing fatigue.


Evidence for Preventing Iron Deficiency in High-Risk Groups

Research has also explored the use of ferrous sulfate for the prevention of iron deficiency in people who have depleted iron stores (latent iron deficiency). This research landscape includes a mix of Randomized Controlled Trials and large-scale Observational Studies that monitored specific populations considered to be at higher risk for iron loss. The research examined outcomes related to systemic imbalance by tracking shifts in Serum Ferritin and monitoring the reduction in the incidence or risk of developing overt anemia.


Special Focus: Evidence in Pregnancy and Peripartum Iron Status

Ferrous sulfate was studied for managing iron status in pregnant and postpartum women. The evidence base is strong and includes large RCTs and authoritative Cochrane Reviews. The trials monitored maternal outcomes, including changes in Hemoglobin and Ferritin levels, as well as the assessment of neonatal outcomes. Reports describe patterns where the intervention was associated with measured changes in maternal Hemoglobin levels, often continuing until delivery or shortly thereafter.


Key Limitations and What Remains Uncertain

Studies generally focus on short-term goals, and the follow-up durations were limited in many key studies. Consequently, the long-term effects are not fully established or well characterized across a wide range of patient groups. Data for certain groups remain insufficient, particularly concerning data on some clinical outcomes in maternal or neonatal populations, where certainty is low. A persistent limitation is that the results apply only to the populations studied, and challenges related to patient adherence in the studies may influence the real-world performance of the treatment.

Key Studies & References

  1. Antenatal iron supplementation – World Health Organization (WHO)

Frequently Asked Questions (FAQ)

Common questions about Ferrogradumet (FAQ)


Q: What is the purpose of the 'Gradumet' part of the name?

Ferrogradumet is formulated as a modified-release tablet, which is also known as a prolonged-release system. This technology is designed to release the iron slowly and consistently as the tablet moves through the gastrointestinal tract. This controlled delivery is intended to help reduce potential irritation or discomfort in the digestive system, which is a common issue with standard iron supplements.


Q: Does Ferrogradumet interact with certain antibiotics?

Yes, official product information confirms that the iron component reduces the absorption of certain antibiotics, specifically tetracycline and quinolone classes. To help manage this interaction, regulatory documents advise separating the administration time of the iron and these antibiotics, typically by two to four hours.


Q: Is the high iron content in Ferrogradumet safe for long-term use?

Official guidance confirms that use of Ferrogradumet typically continues for several months to fully replenish the body’s stored iron (ferritin), often for three to six months after blood levels normalize. Treatment extending beyond this period requires continuous clinical oversight.


Q: What are the signs of taking too much Ferrogradumet?

Signs of a serious overdose must be treated as a medical emergency. These may include symptoms such as severe, persistent stomach pain, vomiting blood, vomit that looks like coffee grounds, or black, tarry, or bloody stools. Ferrogradumet and all iron products must be kept out of the sight and reach of children to prevent accidental poisoning.


Q: Can I take other supplements like Vitamin C alongside Ferrogradumet?

The absorption of iron can be influenced by other substances. Some regulatory labels note that Vitamin C (ascorbic acid) may enhance iron absorption. For other vitamins, it is important to check the full drug information, as official labels do not cover every possible supplement interaction.


Q: Does Ferrogradumet contain gluten or common allergens?

Official excipient lists confirm that Ferrogradumet contains lactose monohydrate and sucrose, which may affect patients with rare hereditary intolerance issues. The tablet also contains the coloring agent Ponceau 4R Lake (E124), which may cause allergic reactions in some individuals. Information regarding gluten is not explicitly listed in the excipient profile.


Q: Does Ferrogradumet contain lactose?

Yes, according to the official list of ingredients, Ferrogradumet tablets contain lactose monohydrate as an inactive component (excipient).


Q: Do older adults process Ferrogradumet differently than younger people?

Regulatory guidance advises that elderly patients typically use the standard adult dosage. However, official information notes that due to the modified-release formulation, patients with delayed intestinal transit may require specific management.


Q: What if I accidentally take two Ferrogradumet tablets at once?

Official dosing guidelines strictly advise against taking a double dose to make up for a missed one. Accidental overdose must be treated as a medical emergency, and contact with a poison control center or emergency services is necessary.


Q: What research supports the use of Ferrogradumet for iron deficiency?

The active ingredient in this medication, Ferrous Sulfate, is a widely-used form of oral iron therapy. Its efficacy for treating iron deficiency anemia is well-supported by extensive evidence from systematic reviews and meta-analyses that track key blood markers like hemoglobin and ferritin.


Q: Is there a best time of day to take Ferrogradumet?

Official product information states that the tablets may be taken before meals for maximum absorption of the iron. Alternatively, they may be taken during or after meals if taking them on an empty stomach causes gastrointestinal upset or discomfort.


Q: Can men take Ferrogradumet, or is it mainly for women?

The recommended dosage is specified for Adults and the Elderly generally. There are no gender-specific restrictions on its use; it is prescribed whenever a diagnosis of iron deficiency has been confirmed.


Q: Why do some people need to take iron supplements like this for a long time?

Iron therapy is often required for an extended period, typically several months. This duration is necessary not only to correct current anemia but also to ensure the body's iron stores, measured by ferritin, are fully replenished.


Q: Does Ferrogradumet cause or worsen constipation?

Constipation is listed in official documents as a common side effect of this medication. Official information notes that patients with pre-existing gastrointestinal conditions, such as intestinal obstruction, require clinical management.


Q: How long after taking antacids or calcium can I take Ferrogradumet?

Antacids and calcium salts are known to reduce the absorption of iron. Regulatory documents advise separating the administration of Ferrogradumet and these agents by two to four hours to ensure optimal iron uptake.


Q: Does Ferrogradumet interact with thyroid medication?

Yes, regulatory documents indicate a known interaction with Levothyroxine (a common thyroid medication). Concurrent use reduces the absorption of Levothyroxine, meaning a separation of administration time is necessary.


Q: Does Ferrogradumet interact with common pain relievers like ibuprofen?

Yes, a pharmacodynamic interaction is noted with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), a class that includes ibuprofen. Taking iron with NSAIDs may increase the risk of irritation to the lining of the gastrointestinal tract.


Q: What food or drinks should I avoid when taking Ferrogradumet?

Official information advises that the absorption of iron may be reduced by compounds found in common beverages like tea, coffee, and milk. Foods containing phytates and oxalates can also interfere with iron uptake, so consumption around the time of dosing should be considered.

How should Ferrogradumet be stored and disposed of?

How to Store and Dispose of Ferrogradumet?

The storage and disposal of this medication are governed by official regulatory standards to maintain stability and ensure safety. Ferrogradumet must be stored below 30 C to support its typical three-year shelf life, as specified in regulatory documentation. The most critical safety instruction is the mandatory requirement to KEEP OUT OF THE SIGHT AND REACH OF CHILDREN due to the serious risk of iron poisoning.

Official Storage and Disposal Profile

Requirement Type Labeled Instruction
Temperature Constraint Store below 30 C (86 F).
Child Safety KEEP OUT OF THE SIGHT AND REACH OF CHILDREN.
Disposal Method Do not discard via wastewater. Follow local regulations for expired or unused medicine.

Disposal must be managed through official drug take-back programs or as instructed by local waste guidelines; the product must not be flushed down a toilet or sink.

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

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