Ferosac

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Ferosac

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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 Ferosac

What is Ferosac? Identity, Class, and Purpose

Ferosac is a prescription-only medication primarily used for iron replacement therapy. It is classified as an Antianemic Preparation and is notable for its specialized method of delivery, which bypasses the digestive system.

Property Description
Active ingredient Iron(III)-hydroxide sucrose complex (Iron Sucrose)
Form Sterile Solution (Injection/IV Infusion)
Pharmacological class Parenteral Iron Replacement (Hematinic Agent)
Common use Replenishing the body's iron stores
Origin Synthetic Agent (Polynuclear complex)
Regulatory Status Prescription-Only Medicine

Ferosac: Identity as a Parenteral Iron Replacement

Ferosac is fundamentally a specialized Parenteral Iron Replacement product, belonging to the Hematinic Agent class of medicines designed to support blood component formation. This means the medication is administered directly into the bloodstream via the intravenous (IV) route, a feature that distinguishes it from common oral iron supplements. The IV route allows for a rapid supply of iron in patients who have difficulty absorbing iron through the gut or whose conditions, such as Chronic Kidney Disease (CKD), demand specialized iron management. This confirms Ferosac's identity as a targeted intervention for specific patient groups requiring high-impact iron restoration.


Composition and Origin: Unique Features of Iron Sucrose

The active core of Ferosac is the Iron(III)-hydroxide sucrose complex, or Iron Sucrose, a synthetic agent synthesized as a stable polynuclear iron complex. This single-ingredient product is delivered as a dark brown aqueous solution in ampoules. The complex is characterized by physicochemical properties that provide a favorable stability profile compared to some older IV iron products, minimizing the amount of free iron in circulation. This stable complex structure is key to delivering the essential Fe^3+ (elemental iron) to the body's cells in a controlled manner.


Core Purpose: Restoring Iron Stores and Hemoglobin Capacity

The general purpose of this antianemic preparation is to address iron deficit by directly and efficiently replenishing the body’s essential iron stores. By supplying this crucial mineral, Ferosac provides the necessary foundation for the synthesis of hemoglobin, which is the vital component of red blood cells. Ultimately, the action of Ferosac is aimed at restoring the blood's capacity for efficient oxygen transport throughout the body, supporting overall physiological function in individuals with documented iron deficits.

Regulatory References

  1. Iron Sucrose Injection: MedlinePlus Drug Information

What side effects are possible with Ferosac?

Possible Side Effects and Safety Information

The safety profile for Ferosac (Iron Sucrose) is defined by officially documented adverse reactions that affect various body systems and are classified by frequency, consistent with regulatory standards from authorities like the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA).

Frequency-Classified Adverse Reactions

The majority of documented effects are transient, though frequency classifications range from common to rare:

  • Common: Adverse reactions classified as common include transient taste disturbances (e.g., metallic taste), nausea, vomiting, headache, dizziness, and changes in blood pressure (hypotension or hypertension). Reactions at the injection or infusion site are also commonly observed.
  • Uncommon: Reactions listed as uncommon include chest pain, difficulty breathing (dyspnea), itching (pruritus), hives (urticaria), and tingling sensations (paresthesia).
  • Rare: Less frequently documented reactions include fainting (syncope), seizures, and swelling (angioedema).

Serious Adverse Reactions and Safety Constraints

The most critical safety concern explicitly noted in regulatory documents is the potential for anaphylactoid reactions. These are severe, potentially life-threatening hypersensitivity reactions that may occur very soon after administration, often during the beginning of the infusion, and can, in rare instances, lead to cardiovascular collapse.

Safety limitations also restrict the use of Ferosac to specific patient groups. The official labeling states that the medicine must not be used in individuals with evidence of iron overload or in cases of anemia that are not caused by iron deficiency.

Overdose and Emergency Response

Overdose and when to seek help

This section describes the officially documented risks and required emergency actions related to Ferosac (Iron Sucrose) overdosage, as stated in government regulatory labeling.

Overdosage is formally documented to result in acute iron overloading, which can lead to the long-term clinical manifestation of haemosiderosis due to excessive iron storage. Excessive parenteral iron administration carries the potential for hazardous, excessive tissue iron. This risk necessitates strict adherence to official help-seeking requirements.

Official Regulatory Actions and Management

If overdosage is suspected or confirmed, regulatory documents mandate that treatment must be sought. Administration of Ferosac must not occur in patients with evidence of iron overload. The official intervention specified for overdosage, if required, is treatment with an iron chelating agent.

To prevent acute iron overloading, periodic monitoring of hematologic and iron parameters, including serum ferritin and transferrin saturation (TSAT), is required for all adult and pediatric patients. Furthermore, regulatory instruction specifies that serum iron measurements must not be performed for at least 48 hours following intravenous administration to avoid false results. These monitoring requirements are central to preventing iatrogenic hemosiderosis.

Therapeutic Uses of Ferosac

What Ferosac Treats: Main Uses and Benefits

Ferosac (Iron Sucrose) is an iron replacement therapy relevant for addressing Iron Deficiency Anemia (IDA) in situations where oral iron is generally considered not feasible or appropriate. It is commonly applied in the symptomatic management of IDA in patients experiencing Chronic Kidney Disease (CKD).


This therapy supports the management of iron deficiency in conditions involving chronic systemic imbalance or inflammatory states, such as CKD and Inflammatory Bowel Disease. It is applied across conditions where functional stability becomes affected due to a persistent iron deficit, including malabsorption syndromes and states of oral iron intolerance.

Ferosac is relevant for easing symptoms related to physical discomfort and systemic imbalance stemming from severe IDA. These symptoms may include pronounced fatigue, weakness, and symptoms that interfere with daily functioning. The approach provides support that helps ease the overall symptom burden and supports the patient in maintaining a sense of functional stability when symptoms interfere with routine activities.


Quick Fact: Relief for Functional Strain Ferosac is commonly used to help manage severe IDA symptoms in key clinical scenarios, such as CKD, preoperative optimization, malabsorption, and severe anemia in late pregnancy.

Eligibility and Restrictions for Use

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

This map presents the official population eligibility and non-eligibility for Ferosac (Iron Sucrose), derived strictly from governmental regulatory documentation.


Eligibility Scope

Classification Population Rule (As Stated in Regulatory Label)
Populations Allowed Adult patients with Iron Deficiency Anemia (IDA) associated with Chronic Kidney Disease (CKD) [1.5]. Pediatric patients geq2 years of age with CKD (for iron maintenance treatment) [1.5], [3.2].
Populations Contraindicated Patients with known hypersensitivity to the medicine; patients with evidence of iron overload or anaemia not caused by iron deficiency [2.4]. Pregnant women in the first trimester [2.4].
Age-Related Rules Safety and efficacy have not been established in children under 2 years of age [3.2]. Caution is advised for dose selection in older adults [3.2].
Pregnancy Status Contraindicated in the first trimester. Use is restricted to the second and third trimesters only if the benefit outweighs the potential risk [4.4].
Condition-Based Caution Use with caution in patients with a history of severe atopic allergy (e.g., asthma, eczema), immune conditions, or acute/chronic infection [2.4].

Resulting Eligibility Structure

Official eligibility statements strictly define the appropriate patient population. The medicine is contraindicated by regulatory agencies for individuals with known allergies to the product, pre-existing iron overload, or anemia caused by non-iron deficiency issues. While use is established for adults and children 2 years and older with CKD-associated IDA, it is not established for infants under two years of age. Use during pregnancy is also highly restricted, with an absolute contraindication during the first three months.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The officially documented interaction profile for Ferosac (Iron Sucrose), an intravenous iron replacement, is specifically defined by its pharmacokinetic interaction with other iron sources.

Documented Interaction Patterns

Category Interacting Substance Formal Regulatory Restriction
Pharmacokinetic Restriction Oral Iron Preparations Reduced absorption of oral iron; Prohibited co-administration.
Timing-Based Requirement Oral Iron Preparations Oral iron must be initiated at least 5 days after the last injection.

Co-administration with any oral iron preparation is a formally restricted combination because the administration of intravenous iron is documented to reduce the absorption of iron taken through the digestive system. This pharmacokinetic interaction necessitates a mandatory timing separation rule. According to regulatory documents, oral iron therapy must be deferred and can only be started a minimum of five days following the final dose of Ferosac.

Additionally, an official caution exists concerning patients with certain liver conditions. Parenteral iron administration should be avoided if conditions associated with iron overload, such as Porphyria Cutanea Tarda, are considered precipitating factors. No specific interactions involving alcohol, food, herbal products, or drug-metabolizing enzymes (like the CYP system) are documented in the official prescribing information for this intravenous product.

Mechanism of Action

Controlled Iron Delivery via Systemic Pathways

Ferosac's mechanism is defined by the targeted delivery and utilization of iron via the systemic circulatory and metabolic pathways. It is introduced as a large, stable, non-dextran macromolecular iron(III) hydroxide complex designed to prevent the rapid, uncontrolled release of free ionic iron into the plasma. This structure modulates the immediate iron load on the system and maintains iron within the bounds of the complex in the vascular pathways.

Targeted Uptake and Iron Incorporation

The complex is primarily processed by the reticuloendothelial system (RES). Macrophages in this system selectively internalize the complex via phagocytosis, modifying early molecular steps that govern systemic iron availability. Within the macrophage, the iron is released and subsequently exported into the circulation where it binds to the transport protein, transferrin.

This iron-loaded transferrin then supplies erythroid progenitor cells in the bone marrow. The process modifies the cellular environment to influence the heme synthesis cascade, resulting directly in the incorporation of iron into hemoglobin molecules, thus influencing the signaling within these targeted pathways.

Dosage and Administration Information

How to use Ferosac

Ferosac is exclusively used as an Intravenous (IV) iron replacement therapy, administered either through a slow injection or via infusion directly into the bloodstream. This parenteral route is fundamental to its application, distinguishing it from oral iron forms. The general principle of usage involves delivering a cumulative total of 1000 mg of elemental iron over a defined course. The specific dosing regimen is stratified based on the patient's Chronic Kidney Disease (CKD) management status.

CKD Status Regimen (Total 1000 mg Course)
Hemodialysis (HDD-CKD) 100 mg per consecutive dialysis session.
Non-Dialysis (NDD-CKD) 200 mg administered on 5 occasions over a two-week period.

Preparation for use involves strict dilution constraints. The solution must only be mixed with 0.9% Sodium Chloride (normal saline) to achieve a specific concentration, and mixing with any other medication is prohibited. Administration must adhere to specific time parameters; for instance, a 100 mg dose is infused over a minimum of 15 minutes to ensure controlled delivery. Pediatric patients (ages 2 and older) requiring iron maintenance receive a weight-based dose of 0.5 mg/kg in cycles lasting 12 weeks. The treatment course may be repeated if iron deficiency reoccurs.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Ferosac

This section summarizes the available research evidence that has evaluated Ferosac (Iron Sucrose) as a parenteral therapy for Iron Deficiency Anemia (IDA). The information is drawn from authoritative sources, focusing on how different patient groups and outcomes were observed in studies, rather than providing clinical guidance.


Evidence for use in Chronic Kidney Disease (CKD)

The most comprehensive research base for Ferosac was evaluated in patients with Chronic Kidney Disease (CKD) who also have IDA. This is a condition marked by functional limitations where oral iron is often less suitable in this context due to systemic factors. Research has primarily focused on randomized controlled trials (RCTs) and systematic reviews. The main parameters research examined were the blood's capacity for oxygen transport, measured by Hemoglobin ( Hb) levels, and the restoration of the body's iron storage capacity, monitored through biomarkers. Studies reported patterns related to measured increases in both Hb levels and iron stores over defined time intervals. However, the evidence quality varies across studies, and long-term effects remain uncertain.


Evidence for IDA when Oral Iron is Not Feasible

Research has also been studied for patients with IDA resulting from conditions where oral iron absorption is difficult or causes severe side effects, such as Inflammatory Bowel Disease (IBD) or certain malabsorption syndromes. These studies explored situations where symptoms become more noticeable due to difficulty absorbing iron. Research describes that the intravenous route was studied for measured changes in iron stores that were observed over shorter time intervals compared to oral iron. The data for certain groups remain insufficient, and findings concerning outcomes related to physical discomfort may be harder to interpret due to the varied nature of the underlying conditions.


What Research Gaps and Uncertainties Remain

The research highlights what is known and where data are insufficient. Uncertainty often stems from limitations in long-term follow-up and consistency of findings across different patient groups. Long-term effects are not fully established regarding the maintenance of iron stores and the impact on overall health markers beyond one or two years. Furthermore, comparative evidence is lacking in some areas. The results apply only to the populations studied, and research does not determine whether an individual will respond similarly, as study results reflect the specific conditions under which they were observed in.

Key Studies & References

  1. Iron management in chronic kidney disease (KDIGO Guideline Context)
  2. Iron sucrose: characteristics, efficacy and regulatory aspects of an established treatment of iron deficiency and iron-deficiency anemia
  3. Evaluation of Iron Sucrose and Ferric Carboxymaltose Therapies in Patients with Iron Deficiency Anemia (Non-CKD/IBD Comparative Study Context)

Frequently Asked Questions (FAQ)

Common questions about Ferosac (FAQ)

Q: Can Ferosac be taken with food?

A: Ferosac is administered directly into the bloodstream using an intravenous (IV) infusion, which means it bypasses the entire digestive system. According to the official regulatory information, its administration schedule is determined by the treatment course and is not timed or related to food consumption.

Q: Are there any foods or drinks to avoid while taking Ferosac?

A: Official prescribing information for this intravenous medicine typically does not list any specific food, drink, or alcohol restrictions. However, the medicine does have a documented interaction with oral iron supplements, which must be initiated separately.

Q: Does Ferosac interact with antacids?

A: Regulatory documents state that no specific interactions involving antacids or drug-metabolizing enzymes are formally documented for this intravenous product. The primary documented interaction is with oral iron preparations.

Q: Is Ferosac suitable for people with a history of ulcers?

A: A history of ulcers is not listed as a formal contraindication in official labeling. However, the medicine is contraindicated if the anemia is not caused by iron deficiency, and the patient’s full medical history and current condition are subject to assessment by a healthcare provider.

Q: Is Ferosac safe for the elderly?

A: Official prescribing information indicates that caution is advised for dose selection in older adults. This is often due to the potential for age-related decreases in the function of organs like the heart, liver, and kidneys, which may influence treatment.

Q: Can Ferosac be used if I have diabetes?

A: Diabetes is not listed as a formal contraindication in official product labeling. The medicine is contraindicated only for specific conditions like known hypersensitivity to the complex or evidence of iron overload.

Q: What is the chemical name of the active substance in Ferosac?

A: The active ingredient in the medicine is formally known in regulatory documents as the Iron(III)-hydroxide sucrose complex. This substance is commonly referred to in medical practice as Iron Sucrose.

Q: Is Ferosac a type of slow-release formulation?

A: Ferosac is officially described as a macromolecular iron complex. It is specifically designed for targeted delivery within the body and is intended to provide a controlled systemic delivery of iron, preventing the rapid, uncontrolled release of free iron into the bloodstream.

Q: How quickly does Ferosac start working?

A: Studies and official information suggest that patterns of hematologic response, such as changes in red blood cell form and color, have been noted within 3 to 10 days of starting iron replacement therapy.

Q: What should I do if I miss a day of Ferosac?

A: Ferosac is administered by a healthcare professional as a scheduled intravenous treatment. If a patient misses a scheduled treatment session, contact with their treating clinic or facility is necessary to reschedule the next step of their treatment course.

Q: Why does Ferosac cause changes in stool color?

A: Changes in stool color, such as darkening, are a commonly known effect of oral iron products. Because this medicine is delivered intravenously, changes in stool color are not listed in the common or uncommon adverse reaction profiles for Ferosac.

Q: What is the typical duration of Ferosac treatment?

A: The standard adult treatment course is typically defined by a specific total cumulative dose of 1000 mg of elemental iron, administered over several sessions. For pediatric patients, the treatment often follows a 12-week maintenance cycle.

Q: Can I take Ferosac with a daily multivitamin?

A: If your multivitamin contains oral iron, regulatory documents note that the administration of intravenous iron can reduce the absorption of that oral iron. For this reason, oral iron is typically initiated at least five days after the last intravenous dose.

Q: How is Ferosac different from IV iron infusions?

A: Ferosac is a specific type of intravenous iron, known chemically as an Iron(III)-hydroxide sucrose complex. Official descriptions emphasize its unique, large, stable molecular structure, which is processed primarily by the body's reticuloendothelial system for controlled systemic delivery.

Q: Why do doctors prescribe Ferosac instead of other types of iron?

A: Official indications list the product for Iron Deficiency Anemia (IDA) in patients with Chronic Kidney Disease (CKD) or for IDA in patients who have demonstrated intolerance to, or poor response to, oral iron preparations. It is used when a high-impact, non-oral iron delivery is indicated.

Q: Does Ferosac affect lab test results?

A: Yes. Transferrin saturation values increase rapidly following administration. Regulatory documents indicate that reliable measurements for serum iron blood tests may require a wait of at least 48 hours following the intravenous dose.

Q: What happens if you accidentally take too much Ferosac?

A: An overdosage can lead to acute iron overloading, which is a condition that may result in hemosiderosis (excessive iron storage). Overdosage is treated by medical professionals, if required, with an iron chelating agent.

Q: Are there any long-term effects of taking Ferosac?

A: Due to the body's limited ability to excrete excess iron, official documents emphasize the need for periodic monitoring of blood tests, such as hemoglobin and ferritin. This monitoring is critical to prevent the potential risk of iron overload, or hemosiderosis.

Q: Why is Ferosac often prescribed to people with chronic illness?

A: The medicine is officially indicated for Iron Deficiency Anemia (IDA) in patients with Chronic Kidney Disease (CKD), which is a chronic illness. It is also used when IDA is linked to chronic conditions where oral iron absorption is difficult or contraindicated.

Q: Is Ferosac prescribed for women with heavy periods?

A: The medicine is indicated for Iron Deficiency Anemia (IDA) in patients who have failed or cannot tolerate oral iron, or when there is a clinical need to deliver iron rapidly. This includes situations where high rates of blood loss (such as from heavy menstrual bleeding) have caused significant IDA.

Q: Does Ferosac interact with antibiotics?

A: Official warnings advise that parenteral iron should be used with caution in the presence of acute or chronic infection. Administration is generally subject to review and may be stopped if a patient has ongoing bacteremia (a bacterial infection of the blood).

Q: How long after stopping Ferosac does the effect last?

A: The treatment provides a dose of iron designed to replenish body stores. However, the duration of the effect is variable. Regulatory documents specify that the treatment course may be repeated if blood test monitoring shows that the iron deficiency has reoccurred.

Q: Why do official documents describe Ferosac as a specific formulation?

A: Official documents emphasize the medicine's unique chemical structure, the Iron(III)-hydroxide sucrose complex. This structure is specifically designed to ensure controlled and stable delivery of iron to the body's transport proteins, which minimizes the risk of adverse reactions from free iron.

Q: What is the maximum amount of time Ferosac is usually taken?

A: Treatment is defined by a specific cumulative dose for adults (1000 mg) or a 12-week maintenance cycle for children. These defined courses can be repeated if monitoring shows a return of iron deficiency, rather than a fixed maximum total duration.

How should Ferosac be stored and disposed of?

How to Store and Dispose of Ferosac?

The storage and disposal of Ferosac (Ferric Carboxymaltose) injection must adhere strictly to the conditions specified in official regulatory labeling to maintain product integrity.

Storage and Handling

Requirement Official Condition
Temperature Store at 20°C to 25°C (68°F to 77°F).
Protection Store in the original package to protect from light and do not freeze the vials.
Child Safety Keep out of the reach and sight of children.
Stability Vials are single-use only. The diluted solution is stable for up to 72 hours at controlled room temperature.

Disposal Instructions

Any unused product or waste material must be discarded. Disposal of the unused product or waste material must be carried out in accordance with local requirements for pharmaceutical waste.

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

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