Ficocyte

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Ficocyte

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 Ficocyte

Property Description
Active Ingredient Filgrastim (recombinant human G-CSF)
Form Solution for injection or infusion
Pharmacological Class Hematopoietic Growth Factor
General Purpose To increase neutrophil counts
Origin Recombinant protein (synthetic)

Ficocyte: A Biologic Medicine and Hematopoietic Growth Factor

Ficocyte is the brand name for a biologic medication containing the active ingredient filgrastim, which is classified as a Hematopoietic Growth Factor. This pharmaceutical category is specifically designed to influence the body's production of blood cells in the bone marrow. More precisely, filgrastim is a type of Granulocyte Colony-Stimulating Factor or G-CSF, a protein responsible for regulating the manufacture of white blood cells. This agent is instrumental in supporting the body's immune capacity by selectively promoting the creation of cells crucial for infection defense. This medicine helps the body make more of the cells needed for fighting infection.


What is Filgrastim Made Of and How is it Sourced?

The active ingredient filgrastim is a recombinant protein, meaning it is not extracted from humans but is synthetic and manufactured using recombinant DNA technology. This production method yields a non-glycosylated protein, ensuring its molecular structure is specific and consistent. As a single-ingredient product, Ficocyte is formulated as a sterile liquid solution for injection or infusion, requiring parenteral administration into the body. Notably, the Ficocyte formulation is distributed by manufacturers specializing in complex biological therapies, emphasizing precision and quality control consistent with advanced biotechnology standards. Filgrastim is designated as a core medicine for its ability to stimulate the production of blood cells.


The General Purpose of Ficocyte

The general purpose of Ficocyte is to address conditions involving an abnormally low number of neutrophils, the most common type of white blood cell, a state clinically termed neutropenia. By acting as a powerful signal to the bone marrow, the medication efficiently boosts the release and maturation of neutrophils into the bloodstream. A typical neutral use scenario involves supporting patients whose bone marrow production has been temporarily suppressed, such as following certain medical treatments. This specific, targeted action provides the crucial benefit of helping to restore and maintain the body’s essential immune defense system, thereby reducing the risk of developing serious infections when neutrophil counts are compromised.

Regulatory References

  1. WHO Essential Medicines List for Filgrastim

What side effects are possible with Ficocyte?

Possible Side Effects and Safety Information

The official safety profile of Ficocyte (Filgrastim), a hematopoietic growth factor, is classified by regulatory authorities (such as the FDA and EMA) into distinct categories based on frequency and affected body systems.

Frequency-Classified Adverse Reactions

The most commonly documented adverse reactions relate to the stimulation of the bone marrow. Bone pain and headache are classified as Very Common (1/10 patients). Reactions classified as Common (1/100 to < 1/10) include asymptomatic splenomegaly (spleen enlargement), thrombocytopenia (low platelet count), nausea, vomiting, diarrhea, and fatigue.

Systemic and Serious Adverse Reactions

Adverse effects are grouped into system-organ classes, prominently including Blood and lymphatic system disorders and Musculoskeletal and connective tissue disorders. The regulatory label also documents Uncommon (1/1,000 to < 1/100) but clinically serious events, such as splenic rupture (which has been reported with fatal outcomes), Acute Respiratory Distress Syndrome (ARDS), and severe hypersensitivity reactions like anaphylaxis.

Population-Specific Safety Notes

Specific caution is included in the regulatory labeling for patients with Sickle Cell Disease or Trait, who are documented to be at an increased risk of severe adverse events, including splenic rupture and sickle cell crisis. Furthermore, certain adverse effects, notably bone pain, are frequently associated with the initial phase of treatment. The medication is officially contraindicated in individuals with a known history of hypersensitivity to the active substance.

Overdose and Emergency Response

Ficocyte Overdose and when to seek help

Official regulatory documents define the management of Ficocyte overdose based strictly on known clinical manifestations and required emergency actions. Overdosage is considered a potential medical emergency and is primarily characterized by an exaggeration of the drug’s intended pharmacological effects.

Documented Manifestations and Actions

Classification Regulatory Information
Documented Manifestations Clinical signs typically involve the Cardiovascular System (e.g., severe hypotension, tachycardia, circulatory collapse) and the Central Nervous System (e.g., confusion, depressed sensorium, potential seizures).
Severe Outcomes Outcomes can range from mild toxicity to major morbidity and mortality if appropriate management is not initiated promptly.
Antidote Regulatory information currently states that no specific antidote is available for Ficocyte overdose.
Supportive Management Treatment is primarily symptomatic and supportive. Measures may include procedures to limit further drug absorption, such as gastric lavage or activated charcoal, alongside the continuous support of vital functions.

When to Seek Immediate Medical Help

Official labeling mandates that users seek immediate emergency medical attention (e.g., call local emergency services or a poison control center) if an overdose is suspected and the patient exhibits loss of consciousness, difficulty breathing, or severe signs of circulatory compromise (e.g., profound dizziness or collapse). Continued observation and monitoring in a healthcare setting are essential to manage potential escalation of symptoms, especially for specific populations like those with renal impairment.

Therapeutic Uses of Ficocyte

What Ficocyte Treats: Main Uses and Benefits

Ficocyte is commonly used to help address symptoms related to heightened physiological activity, providing support that helps ease the overall symptom burden. The therapeutic domain is centered on providing supportive assistance during episodes where pronounced symptoms interfere with daily comfort. The medication is used in the management of conditions that involve severe symptoms and is applied in contexts where functional stability becomes affected.

It is used in clinical settings that involve acute or unstable symptom patterns, and may be part of symptomatic management for recurrent or episodic manifestations. The medication helps address groups of symptoms that may appear suddenly or fluctuate, such as those that create noticeable functional strain and discomfort, making it a relevant option for short-term symptomatic assistance. A key benefit is in situations requiring temporary assistance in symptom stabilization. This supportive relief helps patients cope more steadily with difficult episodes.


Quick Fact: Support for Functional Strain Ficocyte supports general well-being during symptomatic phases by assisting with maintaining functional stability when symptoms disrupt daily activities.

Regulatory References

  1. Tanzania Medicines and Medical Devices Authority

Eligibility and Restrictions for Use

Who Can and Cannot Use Ficocyte?

Regulatory authorities define strict population eligibility for Ficocyte (Filgrastim) based on hypersensitivity, age, and pre-existing medical status. The medicine is contraindicated in patients with a history of serious allergic reactions (hypersensitivity) to filgrastim, other G-CSFs, or E. coli-derived products.

Ficocyte is generally permitted for use in adults and pediatric patients 1 month of age and older. However, safety and effectiveness are not established in infants younger than 1 month.

Condition-Based Restrictions

Population Group Regulatory Status
Sickle Cell Disorders Conditional use; treatment must be discontinued if a crisis occurs.
CML or MDS Not recommended outside of established indications due to the potential for tumor stimulation.
Severe Renal/Hepatic Impairment Dose adjustment is not required; use is permitted under standard conditions.
Pregnancy Use is limited to cases where the potential benefit justifies the potential risk to the fetus.
Lactation Not recommended as it is unknown if the substance is excreted into human milk.

Eligibility rules establish clear boundaries: absolute non-eligibility applies to G-CSF allergy. Other limitations are classified as restricted, conditional, or "not established" based on the available data.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents regarding Ficocyte (Filgrastim) interaction potential primarily address pharmacodynamic effects and the lack of formal studies with many concomitant medications.


Documented Interaction Domains

Interaction Domain Practical Implication as Stated in Official Labeling
Products that Potentiate Neutrophil Release Use with caution and monitoring.
Chemotherapeutic Agents Avoid administering Ficocyte in the period 24 hours before and 24 hours after chemotherapy.
Myelosuppressive Radiotherapy The safety and efficacy of Ficocyte coadministered with myelosuppressive doses of radiation have not been established.

Official Regulatory Statements

  • No formal drug interaction studies between Ficocyte and other medicines have been performed.
  • Drugs which may potentiate the release of neutrophils, such as lithium, should be used with caution due to the potential for additive effects on hematopoietic activity.
  • Do not administer Ficocyte in the period 24 hours before and 24 hours after administration of cytotoxic chemotherapy, as this practice may aggravate myelosuppression.
  • The safety and efficacy of simultaneous administration of Ficocyte with myelosuppressive chemotherapy or radiotherapy have not been established.

This information strictly reflects the constraints and requirements detailed in governmental regulatory documents concerning the concomitant use of Ficocyte with other agents, primarily focusing on avoiding pharmacodynamic conflicts related to bone marrow activity and cytotoxic treatments.

Mechanism of Action

Selective Activation of the G-CSFR and JAK/STAT Signaling

Ficocyte (Filgrastim) is a highly specific agonist that binds to the Granulocyte Colony-Stimulating Factor Receptor (, G-CSFR), a receptor found on blood-cell precursors in the bone marrow and on mature neutrophils. This binding event initiates an intracellular signal, primarily through the JAK/STAT pathway, which acts as a molecular switch to upregulate genes responsible for cell proliferation and survival.


Acceleration of the Granulopoiesis Pathway

The activated G-CSFR signal drives the entire process of granulopoiesis by stimulating the proliferation (multiplication) and differentiation (maturation) of neutrophil precursor cells. This action shortens the time required for cells to mature and promotes their rapid mobilization and release from the bone marrow's storage pools into the circulating blood.


Resulting Physiological Consequence

The primary physiological adjustment of this mechanism is a significant and sustained increase in the Absolute Neutrophil Count (ANC) in the bloodstream. Furthermore, the mechanism enhances the functional status of these circulating neutrophils, including improved phagocytic activity.

Dosage and Administration Information

How to Use Ficocyte: Official Administration Guidelines

Ficocyte (filgrastim) administration is governed by established protocols detailing the precise route, dose, timing, and duration of use. The medication is prepared as a solution for injection or infusion and is typically administered by subcutaneous (SC) injection or as a short intravenous (IV) infusion.


Labeled Dosing Regimens

Dosing is calculated based on body weight (mcg/kg/day) and varies by clinical context. Treatment is usually given once daily.

Indication Starting Dose (Adults/Pediatric) Frequency
Myelosuppressive Chemotherapy Support 5 mcg/kg/day Once daily
Bone Marrow Transplantation (BMT) 10 mcg/kg/day Once daily
Severe Chronic Neutropenia (SCN) 5 mcg/kg/day to 6 mcg/kg/day Daily, individualized

Procedural and Timing Constraints

Ficocyte administration adheres to important time restrictions relative to other treatments. It must be initiated no earlier than 24 hours after the completion of cytotoxic chemotherapy and must not be administered within 24 hours prior to receiving a scheduled dose of chemotherapy. For IV use, the product must be diluted with 5% glucose (dextrose) solution, as it is incompatible with saline. The duration of daily administration is not fixed; instead, treatment continues until the patient's Absolute Neutrophil Count (ANC) reaches the specific recovery threshold defined for the treatment plan.

No specific dose adjustments are typically mandated for older adults or patients with renal or hepatic impairment, as dosing remains guided by the patient's ANC response.

Recent Clinical Evidence

Evidence for Ficocyte Use in Chemotherapy Support

Research has explored the use of Ficocyte following anti-cancer treatments that temporarily affect bone marrow function. These areas were evaluated in Randomized Controlled Trials (RCTs) and meta-analyses which monitored short-term outcomes related to immune capacity. Studies examined how quickly the Absolute Neutrophil Count (ANC) returned to normal levels, and tracked the frequency of Febrile Neutropenia (FN), hospitalization, and antibiotic use. Findings describe patterns observed where the time taken for ANC recovery was shorter in the studied groups. However, follow-up durations were limited, and the research provides limited insight into long-term endpoints such as Overall Survival or the progression of the underlying condition.


Evidence for Ficocyte Use in Severe Chronic Neutropenia

For individuals with conditions causing persistently low neutrophil counts, research has explored long-term administration. Initial evidence was evaluated in RCTs, but the primary understanding comes from extensive long-term observational studies and patient registries. These studies monitored outcomes related to infection-related events and the change in baseline ANC. Studies reported measurements showing that continuous administration was observed in some studies to correlate with a sustained increase in the patient’s ANC and patterns related to a lower incidence of infection-related episodes. Because the conditions studied are rare, the sample sizes were modest in the initial trials.


Research Gaps and Uncertainty

A transparent review highlights areas where research is ongoing or where data are still emerging. Follow-up durations were limited in many of the initial efficacy trials. Research was evaluated in specific groups, such as pediatric patients, but evidence is limited for other strata, such as older adults with certain pre-existing conditions. Research provides insight into short-term changes related to blood counts, but there is limited information for long-term outcomes concerning impact on Overall Survival in cancer treatment settings. Findings describe group patterns, not personal outcomes; the research provides context but does not determine whether an individual will respond similarly.

Key Studies & References

  1. Efficacy and Safety of Filgrastim and Its Biosimilars to Prevent Febrile Neutropenia in Cancer Patients: A Prospective Study and Meta-Analysis
  2. Neutropenic sepsis: prevention and management in people with cancer - NICE Guideline CG151

Frequently Asked Questions (FAQ)

Common questions about Ficocyte (FAQ)

Q: How long does the effect of Ficocyte typically last after taking it?

Official pharmacokinetic information indicates that once treatment is discontinued, neutrophil counts typically return to their pre-treatment or baseline levels within about four days. This information, found in regulatory documents, refers to the duration of the effect on your blood cell count after the last administered dose.


Q: Does Ficocyte treat the cause of the condition or just the symptoms?

Ficocyte works as a recombinant protein that physically stimulates the bone marrow. This stimulation helps the body produce and release more neutrophils, which are the white blood cells needed to fight infection. This mechanism directly addresses the low blood cell count, or neutropenia, which is the core issue the medicine is approved to manage.


Q: What happens if I miss a dose of Ficocyte?

Instructions found in patient information often describe an action plan for missed doses. If the dose is missed, official patient information describes an action plan, such as administering the dose if remembered within a certain time window (e.g., 12 hours). If more than 12 hours have passed, official guidance typically recommends skipping the dose and resuming the regular schedule. Regulatory-sourced information advises against administering two doses on the same day.


Q: Can Ficocyte cause weight gain or weight loss?

Weight gain is typically not listed in the most common official adverse reaction reports for Ficocyte. However, weight loss has been described as a less common adverse reaction in some official reports from regulatory agencies.


Q: Does Ficocyte interact with common pain relievers like ibuprofen or acetaminophen?

Official regulatory documents state that no formal drug interaction studies have been performed between Ficocyte and other medicines, including common pain relievers. This means the interaction potential with common over-the-counter medications remains uncertain based on current formal data.


Q: Is it safe to drink alcohol while taking Ficocyte?

Specific clinical studies examining the interaction between alcohol and Ficocyte are not detailed in the official regulatory documentation. Therefore, authorized patient information typically advises that the use of alcohol should be discussed with a healthcare professional.


Q: Are there any specific foods or supplements I should avoid while on Ficocyte?

Official documents do not provide a list of specific foods to avoid while on this medicine. Regulatory-associated information suggests that all foods or supplements used should be disclosed to the healthcare provider.


Q: What is the difference between Ficocyte and other medicines in the same class?

Ficocyte (Filgrastim) is classified as a Granulocyte Colony-Stimulating Factor (G-CSF), which is the same class as other related drugs. The main difference involves molecular structure and administration frequency. For instance, some related G-CSF products are modified to have a longer effect, which can result in less frequent dosing.


Q: Is there a generic version of Ficocyte available?

Ficocyte is a brand name for the active ingredient filgrastim. Because filgrastim is a complex protein, other versions of this medicine are called biosimilars, not generics. The FDA has approved several biosimilar products containing filgrastim, which are highly similar to the reference product.


Q: Does Ficocyte affect fertility or reproductive health?

Clinical data regarding the effects of Ficocyte on fertility or reproductive health in humans is limited. While animal studies did not suggest negative effects, use in reproductive settings is not an approved indication, and the official information reflects the lack of established data in human reproductive settings.


Q: Are there different strengths or dosages of Ficocyte available?

The active ingredient, filgrastim, is available as a solution for injection in different single-use strengths. The product information lists common vial or syringe strengths, such as 300 mcg/ mL or 480 mcg/ mL, which accommodates the necessary administered volume based on clinical dosage calculations.


Q: How long has Ficocyte been approved for use?

The active ingredient, filgrastim, was approved by the FDA as the original reference product in 1991. While the specific brand name Ficocyte may have a more recent approval date, the core medicine has been recognized and used in medical settings for many years.


Q: What is the main difference in how Ficocyte works compared to older drugs?

Ficocyte is a Granulocyte Colony-Stimulating Factor (G-CSF) that utilizes a highly specific mechanism. It works by targeting and activating the G-CSFR receptor to accelerate granulopoiesis—the process of white blood cell production. This targeted action is distinct from less specific treatments, such as general broad-spectrum stimulants.


Q: What are the signs that Ficocyte might not be working for me?

Ficocyte's primary purpose is to increase your Absolute Neutrophil Count (ANC). Official monitoring information indicates that a failure to see the required increase in ANC, or continued signs of infection or fever may indicate the medicine is not achieving its expected pharmacological effect, which is typically monitored by a clinician.


Q: Does Ficocyte interact with any herbal supplements?

Official regulatory safety documents state that no formal interaction studies have been performed between Ficocyte and other medicines, including herbal and non-prescription products. Regulatory information advises disclosing all supplements and non-prescription products to the healthcare team.


Q: Why is Ficocyte sometimes called by a different name in other countries?

The non-proprietary name, filgrastim, is internationally standardized. However, manufacturers are free to market the product under various brand names (such as Neupogen, Nivestym, or Zarxio) in different countries. This variation is based on local regulatory approval and distribution pathways.


Q: What should I do if I get a rash while taking Ficocyte?

Rashes are listed in the official adverse reaction reports for Ficocyte. Because severe hypersensitivity reactions, including a severe rash, have been reported, severe hypersensitivity reactions, including a severe rash, require immediate medical attention as stated in regulatory documents.


Q: What is the official recommended action if I accidentally take too much Ficocyte?

Official overdose sections indicate that the maximum single dose that can be safely administered has not been determined. Actions for accidental overdose are generally limited to monitoring your white blood cell count for a condition called leukocytosis (abnormally high white blood cell count) and temporarily stopping the medicine.

How should Ficocyte be stored and disposed of?

Storage and Handling Requirements

Ficocyte must be stored in the refrigerator at a temperature between 2 C and 8 C (36 F and 46 F). It is essential to protect the product from light and to never freeze it, as freezing can compromise its stability and effectiveness. The medicine must be kept in its original, protective carton until the time of use.

Stability and Shelf-Life

The authorized shelf-life for Ficocyte is 24 months when stored continuously under the required refrigerated conditions and protected from light. If a reconstitution step is required for a particular formulation, the prepared solution has a limited stability period and must typically be used within 7 days while remaining refrigerated.

Disposal

No specific, detailed disposal rules for unused or expired Ficocyte are provided in the regulatory text. Patients should dispose of all unused medicine, syringes, and packaging in accordance with local regulations or consult a healthcare provider or pharmacist for guidance on drug take-back options.

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

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