Derebel

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Derebel

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 Derebel

Quick Facts

Property Description
Active ingredient Capecitabine
Form Film-coated tablets
Pharmacological class Antineoplastic Antimetabolite
General purpose Systemic cancer therapy
Origin Synthetic prodrug

What is Derebel and its Chemical Classification?

Derebel is the trade name for the prescription-only medication containing the active ingredient Capecitabine. It is chemically classified as a synthetic antineoplastic agent and a nucleoside metabolic inhibitor. This drug belongs to the fluoropyrimidine derivative pharmacological group.

Capecitabine is notably a prodrug, a designation critical to its function, meaning it is administered in an inactive form that is subsequently converted by the body's enzymes into the potent cytotoxic agent, 5-fluorouracil (5-FU). This intentional design is clinically recognized for enabling a less frequent administration schedule compared to some other chemotherapies.

Composition, Origin, and Physical Form

The medication is a single-ingredient product derived from synthetic chemistry. It is supplied for systemic therapy as film-coated tablets suitable for oral administration. The physical form establishes Derebel as a distinct type of oral chemotherapy, offering a flexible, non-invasive method for delivering the active compound.

As an oral antineoplastic agent, Capecitabine is a treatment component in various established protocols. The oral preparation of this agent offers a key differentiating feature by integrating systemic treatment into a patient’s routine outside of a clinical setting, unlike its intravenous analogues.

General Therapeutic Purpose and Role

The general purpose of Derebel is to provide systemic treatment for malignant neoplasms. It acts as a cytostatic agent, with the overall role of managing tumor progression by interfering with the cellular processes required for uncontrolled growth.

The activated drug works by disrupting the synthesis of DNA and RNA, essential for cell multiplication. Capecitabine is utilized in the management of several malignant disease states. Its mechanism allows the medication to control the spread of disease and reduce tumor burden throughout the body, such as when used in adjuvant therapy following initial surgical intervention.

Regulatory References

  1. EMA EPAR for Xeloda (Capecitabine)

What side effects are possible with Derebel?

Possible Side Effects and Safety Information

This section details the officially documented adverse reactions and safety characteristics for Derebel (Capecitabine), based strictly on government regulatory documents such as the FDA Prescribing Information and the EMA Summary of Product Characteristics (SmPC).

Adverse Reaction Classifications

Side effects are classified by the frequency of their occurrence, as defined by regulatory health authorities:

Classification Examples of Officially Documented Adverse Reactions
Very Common (ge 1/10) Diarrhea, Palmar-Plantar Erythrodysesthesia Syndrome (Hand-Foot Syndrome), Nausea, Fatigue, Anemia, Hyperbilirubinemia, Abdominal Pain, Stomatitis.
Common Vomiting, Alopecia (Hair Loss), Edema (Swelling), Lymphopenia, Anorexia, Dehydration.

Adverse reactions are also grouped by the System-Organ Class (SOC) affected, including Gastrointestinal Disorders, Skin and Subcutaneous Tissue Disorders, Blood and Lymphatic System Disorders, and General Disorders.

Serious Safety Considerations

The regulatory safety profile identifies several rare but critical adverse reactions:

  • Serious Toxicities: These include life-threatening events associated with complete Dihydropyrimidine Dehydrogenase (DPD) deficiency.
  • Cardiotoxicity: Officially documented cardiac disorders include myocardial infarction/ischemia and arrhythmias.
  • Severe Skin Reactions: The label lists Severe Cutaneous Adverse Reactions (SCARs), such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN).

Population-Specific Safety Statements

Specific patient conditions and populations require particular safety consideration as documented in the label:

  • Contraindications: Derebel is officially contraindicated in patients with known severe renal impairment (creatinine clearance <30 mL/min), complete absence of DPD activity, or known hypersensitivity to the drug.
  • Fetal Risk: The medication can cause embryo-fetal toxicity, and caution is noted for pregnant and lactating patients.
  • Geriatric Patients: Older patients may experience a greater incidence of certain adverse reactions, such as severe diarrhea and stomatitis.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose involving Derebel (Capecitabine) is characterized by the potential for acute, severe, and potentially fatal systemic toxicity, as documented in official regulatory prescribing information. Overexposure may result in severe Gastrointestinal Toxicity, including high-grade Diarrhea and Mucositis, along with Neutropenia, and signs of Neurotoxicity. The regulatory profile also highlights the risk of life-threatening events, particularly Cardiotoxicity, which includes documented manifestations such as Myocardial Ischemia and Sudden Death.

Individuals with a known or suspected DPD deficiency are identified as a population with significantly heightened risk for acute, severe toxicity following exposure, which underscores the potential for fatal adverse reactions.

Immediate medical attention is required for any suspected overdose or presentation of severe toxicity. The regulatory profile specifies the necessity of managing the overdose with the documented specific agent: Uridine Triacetate. This antidote must be administered within 96 hours of the exposure to counteract the effects of high-dose Capecitabine. Supportive measures, such as symptomatic treatment and fluid and electrolyte replacement for dehydration, are also required components of management. Continuous clinical and biochemical monitoring is essential for all patients during the recovery period.

The official regulatory profile defines the overdose scenario based on the specific antidote requirement and the immediate, life-saving need to treat acute, documented systemic risks and severe manifestations.

Therapeutic Uses of Derebel

What Derebel Treats: Main Uses and Benefits

In therapeutic contexts, Derebel is commonly used to help manage the overall symptom burden associated with several major malignancies. This includes conditions presenting with systemic or localized discomfort, such as colorectal cancer (in the colon and rectum), and certain upper GI cancers like gastric and esophageal cancer, as well as advanced or metastatic breast cancer. This medication is applied in situations where additional symptomatic support is needed. The overall purpose is to provide supportive systemic management for the condition, which helps manage the overall progression of the disease and contributes to the reduction of overall tumor burden.

Reducing the Risk of Disease Recurrence

The medication is relevant in clinical settings that involve acute or disruptive symptom patterns, such as the period immediately following surgery for high-risk tumors, notably Stage III colon cancer. In this adjuvant context, Derebel is used across domains where additional symptomatic support is needed. This application may support the patient with improved long-term comfort by assisting with managing the risk of the condition returning.

Quick Fact Relief for Symptom
Primary Benefit Systemic management of conditions presenting with physiological stress
Key Clinical Context Adjuvant therapy following surgery for Stage III colon cancer
Practical Advantage Supports at-home systemic management via oral tablet

Eligibility and Restrictions for Use

Derebel (Capecitabine) is approved for use in adults who meet specific health criteria. Regulatory agencies strictly define populations who must not use the medicine.

Population Status Eligibility Rule (Official Labeling)
Contraindicated Patients with known hypersensitivity to capecitabine, 5-fluorouracil (5-FU), or any drug component.
Patients with severe renal impairment (CrCl <30 mL/min).
Pregnant women and individuals with known complete DPD deficiency.
Use Not Established Pediatric patients (safety and efficacy have not been established).
Restricted Use Patients with moderate renal impairment (CrCl 30-50 mL/min): Use requires a mandatory starting dose reduction.
Patients with mild to moderate hepatic impairment: Use requires careful monitoring.
Reproductive Status Women must discontinue nursing during treatment. Females and males of reproductive potential must use effective contraception during and after therapy.

Connection to the Overall Eligibility Profile

Official regulatory documents establish absolute prohibitions based on severe metabolic limits (DPD deficiency), organ function (severe renal impairment), or known hypersensitivity. For other groups, the profile mandates conditional use, requiring either a formal dose reduction or heightened monitoring to maintain eligibility for treatment, ensuring patient safety within the scope of documented risks.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official government regulatory documentation, such as the Summary of Product Characteristics (SmPC) or Prescribing Information (PI), establishes the authoritative framework for drug interactions. These documents detail how other medicinal products, foods, and substances can affect the exposure or action of a drug, thereby setting crucial usage constraints.

Interaction Domain Official Regulatory Status
Exposure-Altering Substances No documented list found
Pharmacodynamic Risk Enhancers No specific warnings listed
Required Administration Timing No separation rules documented
Food, Alcohol, Herbal Products No specific restrictions listed

Official regulatory sources do not currently contain published interaction information for a specific product marketed under the name “Derebel.” Consequently, the official interaction profile lacks documented details on:

  • Medicinal product classes that may significantly alter its body concentrations (pharmacokinetic interactions).
  • Specific agents that could lead to additive or synergistic adverse effects (pharmacodynamic interactions).
  • Regulatory requirements for timing administration relative to other agents to maintain effectiveness or safety.

The absence of an official interaction map in government drug labels means that explicit constraints regarding co-administration with other treatments, common over-the-counter medicines, or specific foods are not established in public records.

Mechanism of Action

How Derebel Works

Derebel's action is defined by its selective engagement with key mechanistic domains to modify overactive or dysregulated cellular processes, resulting in an altered physiological output. It achieves this through targeted influence on distinct signaling patterns.


Modulating Receptor-Mediated Signaling

Derebel primarily acts within domains involving receptor- or enzyme-mediated signaling. This involves the specific molecular targets the drug interacts with, such as [specific target placeholder, e.g., binding to the beta-adrenergic receptor]. By initiating or suppressing these initial signaling sequences, Derebel modifies early molecular steps that determine systemic physiological outcomes, reducing the concentration or duration of mediator activity by adjusting the state within targeted pathways.


Regulating Key Pathway Activation Cascades

Derebel modulates key pathways associated with heightened physiological responses. This action is relevant in biological cascades where multiple layers of pathway activation occur, often in transmitter-dominant systems. The drug engages mechanisms that influence feedback regulation within pathways, effectively altering pathway activity that might otherwise escalate. This functional domain modulates overactive physiological responses toward a baseline state, resulting in pathway adjustments that define the drug's physiological profile.

Dosage and Administration Information

How Derebel is Used: Official Administration Guidelines

Derebel (Capecitabine) is a form of systemic cancer therapy that is administered according to specific, standardized regimens.

Administration and Timing

The approved route of administration for Derebel is oral, supplied as film-coated tablets in 150 mg and 500 mg strengths. The medicine must be taken twice daily (BID), with the doses spaced approximately 12 hours apart. A key instruction is that the tablets must be taken with water within 30 minutes after a meal (typically breakfast and dinner) to ensure proper drug absorption.

Dosing Schedules and Cycles

The dosage is calculated based on the patient's body surface area (BSA). A common dosing schedule involves 1250 mg/m^2 BID for monotherapy. Treatment follows a cyclic pattern, most commonly consisting of 14 consecutive days of dosing followed by a 7-day rest period, which completes one 21-day cycle. For advanced disease, treatment continues until disease progression, while adjuvant therapy for colon cancer is limited to a maximum of 8 cycles.

Administration Rule Specific Official Instruction
Physical Handling Tablets must be swallowed whole; they must not be crushed, cut, or chewed.
Missed Dose If a dose is missed, do not take the missed dose or double the next scheduled dose.
Dose Management A dose that has been permanently reduced due to an adverse event must never be increased again.

Population-Specific Use

A starting dose adjustment is utilized for patients with moderate renal impairment (creatinine clearance 30–50 mL/min), often reducing the dose to 75% of the standard amount. Treatment initiation is contraindicated for patients with severe renal impairment (creatinine clearance < 30 mL/min). A lower starting dose may also be considered for older adults.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Derebel

The use of Derebel (Capecitabine) was studied in a range of research, including large-scale clinical trials and comprehensive reviews. This section summarizes the structure of this evidence, focusing on what types of studies were conducted, what outcomes were monitored, and what areas are still being explored by researchers according to comprehensive reviews and large-scale studies. This information provides context but research does not offer individual predictions.

Evidence for Use in Metastatic Breast Cancer

Research involving patients with advanced or systemic breast cancer has included large Phase III randomized trials and extensive reviews. Studies monitored outcomes related to physical discomfort and systemic or functional imbalance. Findings indicate patterns where the measured time without disease progression was observed in the studied groups. Research examined overall disease status in these trials. Evidence from studies that compared different treatment options is still emerging, with results applying only to the populations studied in the trials.

Evidence for Use in Adjuvant Therapy for Stage III Colon Cancer

This area of research focuses on the evidence related to the drug following surgical intervention. Studies monitored outcomes related to the risk of the condition returning (recurrence). Research monitored patient outcomes, such as Disease-Free Survival (DFS) and Overall Survival (OS), over defined time intervals. Trials described patterns observed when different total treatment durations were studied. Information on all comparative combination regimens is still being developed, and the outcomes of the monotherapy in older, more fragile patients remains an area where data are still emerging.

What Research is Still Uncertain or Missing

Despite the existing body of evidence, research is ongoing, and certain aspects remain unclear. Certainty remains low regarding the direct use of the agent as a single treatment option (monotherapy) for all indications, as much of the high-quality evidence is derived from combination regimens. Data for certain groups, such as those with significant pre-existing organ dysfunction or specific comorbidities, remain limited. Research provides insight into short-term changes, but there is limited information for long-term outcomes, especially concerning functional balance and quality of life beyond the primary observation periods of the pivotal trials.

Key Studies & References

  1. International Duration Evaluation of Adjuvant (IDEA) chemotherapy collaboration (Pooled analysis on duration in colon cancer)
  2. Adjuvant capecitabine and oxaliplatin for gastric cancer after D2 gastrectomy (CLASSIC): a phase 3 open-label, randomised controlled trial

Frequently Asked Questions (FAQ)

Common questions about Derebel (FAQ)


Q: Is Derebel approved for use in countries outside of [Example Country]?

Official regulatory documents indicate that the drug is authorized for use by the US Food and Drug Administration (FDA) and the European Medicines Agency (EMA), indicating its authorization across major regulatory regions globally. These governmental bodies maintain specific guidelines for its use in their respective regions.


Q: Does taking Derebel affect blood pressure or heart rate?

Official product information indicates that changes in heart rate and rhythm (arrhythmias), along with both high and low blood pressure, have been reported as uncommon or rare side effects. These potential effects may be discussed with a healthcare provider regarding appropriate monitoring.


Q: Are there any special monitoring tests needed while taking Derebel?

According to regulatory guidelines, monitoring of blood cell counts, including neutrophils and platelets, is required during treatment. Additionally, if the patient is taking certain blood-thinning medications (Vitamin K antagonists), blood clotting measures (like INR) are subject to close monitoring due to potential interactions.


Q: Why does Derebel cause certain side effects?

Derebel is described in regulatory texts as interfering with the synthesis of DNA and RNA, which is essential for cell growth. This action targets quickly multiplying cells, such as cancer cells. Since some healthy tissues, like the lining of the digestive tract and the skin, also have rapidly dividing cells, this mechanism can lead to common side effects like diarrhea and Hand-Foot Syndrome.


Q: What is the maximum duration people usually stay on Derebel?

The duration of treatment is defined by official medical regimens and depends on the condition being addressed. For use following surgery (adjuvant therapy), the regimen is typically limited to a maximum of 8 cycles, which is approximately six months. For advanced disease, the official label describes treatment continuing until there is disease progression or the medication is no longer tolerated.


Q: Are there any known long-term effects of taking Derebel for many years?

For advanced disease, the drug may be taken for an extended duration until it is no longer effective or tolerable. Official safety profiles specify that potential serious adverse reactions, such as cardiotoxicity and kidney damage, are areas for monitoring during long-term use.


Q: What is the difference between how Derebel is approved in the EU versus the US?

The drug is authorized by both the US FDA and the European Medicines Agency (EMA) in Europe. Each regulatory authority maintains its own specific labeling, which details the approved uses (indications) and required safety monitoring, such as recommendations for DPD enzyme deficiency testing.


Q: What does the manufacturer say about storing Derebel?

Regulatory documents provide specific requirements for how the tablets must be stored to maintain their effectiveness. The official requirement is to keep the medicine at controlled room temperature, which is between 68 F to 77 F (20 C to 25 C). The medicine is described as remaining sealed in its original container and protected from moisture.


Q: What is the purpose of the long-term studies mentioned for Derebel?

Official research evidence indicates that the purpose of long-term clinical studies is to monitor critical outcomes over an extended period. These outcomes include Disease-Free Survival (DFS), which tracks patients without recurrence, and Overall Survival (OS), which tracks the total lifespan of the study participants.


Q: Why is Derebel not suitable for people with [Example Contraindication]?

Official labeling indicates the drug is not suitable for certain populations due to specific safety risks. For instance, individuals with a complete deficiency of the DPD enzyme may experience a toxic buildup, which regulatory documents describe as potentially resulting in severe or fatal adverse reactions.


Q: How quickly should Derebel start working?

Pharmacokinetic data in the official labeling indicates how quickly the drug is absorbed. The active compound typically reaches its highest concentration in the bloodstream approximately two hours after a dose is taken. This measurement represents the earliest time point for the drug to be fully processed by the body.


Q: How long does the effect of a Derebel dose usually last?

The time it takes for the drug to be processed is described by its half-life, a pharmacokinetic measure documented in regulatory information. The half-life for both the original drug and its active form is very short, typically about 45 minutes (0.75 hours), meaning the compound is rapidly cleared from the body.


Q: Can Derebel cause weight changes?

According to official product information, changes in body weight are listed as potential adverse reactions. These reported effects include weight loss, decreased weight, and rapid weight gain, though the frequency of these reactions is typically less common.


Q: Is Derebel addictive or habit-forming?

The drug's classification in the regulatory system indicates that it is not considered addictive or habit-forming. The US FDA does not classify the drug as a controlled substance under the Controlled Substances Act.


Q: Can Derebel affect my sleep pattern?

Official adverse reaction reports list insomnia, which is difficulty sleeping, as a common side effect of the medicine. Patients are advised to consider this potential effect when reviewing their safety information.


Q: Does Derebel have any warnings about driving or operating machinery?

Regulatory documentation lists side effects that may potentially impact daily activities. Since common adverse reactions include fatigue and dizziness, official safety information notes that caution is appropriate when performing tasks that require concentration, such as driving or operating machinery.


Q: Is there a generic version of Derebel available?

Official records confirm that the drug is available as a generic medicine. The generic version, which contains the active ingredient Capecitabine, has been approved by the FDA.


Q: What types of mental health conditions are related to Derebel's use?

Official adverse reaction reports include psychiatric and central nervous system effects. Reported reactions include confusion, depression, hostility, agitation, and irritability, as noted in the official safety information.


Q: Is Derebel a controlled substance?

The drug is not listed as a controlled substance. Official US regulatory information confirms that the drug is not classified under the Controlled Substances Act.


Q: Can Derebel cause mood swings or changes in behavior?

Official safety information reports that adverse reactions may involve changes in mood and behavior. These include agitation, confusion, depression, hostility, and irritability, which are noted in the list of officially documented side effects.


Q: Can Derebel make me feel dizzy or lightheaded?

Dizziness is reported as a common side effect in the official product information. Furthermore, dizziness or lightheadedness may be symptoms of other more serious conditions, such as dehydration or heart problems, and should be monitored.


Q: Is Derebel a newly approved medicine?

The regulatory approval history indicates that the drug is an established medicine. It received its initial approval from the US FDA in 1998, meaning it has been in use for several years.


Q: Can Derebel affect my ability to concentrate at work?

Since official safety documents list adverse reactions such as fatigue, dizziness, and confusion, these effects may potentially interfere with one's ability to concentrate. Caution is noted in relation to performing tasks that require mental alertness.

How should Derebel be stored and disposed of?

How to Store and Dispose of Derebel?

Strict storage and disposal requirements for Derebel are mandated by official governmental regulatory documentation to ensure the medicine remains effective and is handled safely.

Storage Requirements

Storage Factor Official Requirement
Temperature Control Store at a precise temperature range (e.g., store below 25 C or 77 F), as specified in the official product labeling.
Physical Protection Keep the medicine in its original container, tightly closed. Protect from freezing and excessive heat. Keep away from moisture and light, where required by labeling.
Child Safety Store all medication out of the sight and reach of children to prevent accidental ingestion.
In-Use Stability If the product requires preparation (e.g., dilution or mixing), strictly follow the labeled instructions for the storage conditions and the defined Beyond-Use Date (BUD) for the prepared solution.

Disposal Instructions

To dispose of expired or unused Derebel, regulatory guidelines strongly recommend utilizing a drug take-back program, if available, such as a mail-back envelope or an authorized collection site. If a take-back option is unavailable, non-flushable medicines must be prepared for disposal in household trash by mixing the tablets with an unappealing substance, like dirt or cat litter, sealing the mixture in a bag, and discarding it. Do not flush Derebel unless it is specifically included on the regulatory agency’s flush list.

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

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