peg-religrast injection - Pegfilgrastim (6mg) medicine

Fillif Peg 6mg Injection: Comprehensive Medicine Guide

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🏭 Reliance Life Sciences 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: High
Reviewed by
SaathiMed Expert Panel | Sep 23, 2026

When to Call Your Doctor IMMEDIATELY

  • Sudden severe pain in the upper left abdomen or left shoulder (possible splenic rupture).
  • Difficulty breathing, rapid breathing, or bluish skin color (possible ARDS).
  • Swelling of the face, lips, tongue, or throat (possible severe allergic reaction).
  • Rapid swelling of the arms, legs, or abdomen, or sudden weight gain (possible capillary leak syndrome).
  • Fever, chills, or sore throat (possible infection).
  • Unusual bleeding or bruising.
  • Decreased urine output or blood in urine.

If experiencing severe symptoms, call emergency services immediately.

What is peg-religrast injection used for?

This medicine is a long-acting injectable form of pegfilgrastim used to prevent infections during chemotherapy by stimulating white blood cell production. It is given as a single 6 mg subcutaneous injection once per chemotherapy cycle.

  • Generic Name: Pegfilgrastim (6mg)
  • Manufacturer: Reliance Life Sciences
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 peg-religrast injection के बारे में (Hindi Summary)

उपयोग: यह दवा पेगफिलग्रास्टिम का एक दीर्घ-अवधि वाला इंजेक्शन है, जिसका उपयोग कीमोथेरेपी के दौरान होने वाले न्यूट्रोपेनिया (श्वेत रक्त कोशिकाओं की कमी) को रोकने के लिए किया जाता है। यह हड्डी के मज्जा को अधिक न्यूट्रोफिल बनाने के लिए उत्तेजित करती है, जिससे संक्रमण का खतरा कम होता है। यह दवा कीमोथेरेपी के बाद एक बार चमड़े के नीचे इंजेक्शन के रूप में दी जाती है। यह कैंसर का इलाज नहीं है, बल्कि कीमोथेरेपी के दौरान संक्रमण से बचाती है।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में हड्डियों में दर्द, सिरदर्द, थकान, मतली और इंजेक्शन स्थल पर लालिमा या सूजन शामिल हैं। गंभीर दुष्प्रभावों में प्लीहा का टूटना, सांस लेने में कठिनाई, गंभीर एलर्जी प्रतिक्रिया और केशिका रिसाव सिंड्रोम शामिल हैं। यदि आपको पेट के ऊपरी बाएं हिस्से में अचानक तेज दर्द, सांस लेने में तकलीफ, या चेहरे पर सूजन हो, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को 2°C से 8°C के बीच रेफ्रिजरेटर में स्टोर करें और जमने न दें। उपयोग से पहले सिरिंज को कमरे के तापमान पर 30 मिनट के लिए रखें। यदि घोल धुंधला हो या उसमें कण दिखाई दें तो उपयोग न करें। यह दवा केवल एक बार उपयोग के लिए है। बिना प्रशिक्षण के स्वयं इंजेक्शन न लगाएं। कीमोथेरेपी के 14 दिन पहले और 24 घंटे बाद तक यह दवा न दें। यदि आप गर्भवती हैं या स्तनपान करा रही हैं तो डॉक्टर को बताएं।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 peg-religrast injection Uses & Benefits

[{"condition":"Chemotherapy-induced neutropenia","description":"This medicine is used to decrease the incidence of infection, as manifested by febrile neutropenia, in patients with non-myeloid malignancies receiving myelosuppressive anti-cancer drugs.","evidence":"Well-established"},{"condition":"Febrile neutropenia prophylaxis","description":"It reduces the duration of severe neutropenia and the risk of febrile neutropenia in patients undergoing chemotherapy.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Stem cell mobilization","description":"Sometimes used off-label to mobilize peripheral blood stem cells for collection prior to autologous transplantation.","evidence":"Limited"},{"condition":"Severe chronic neutropenia","description":"Rarely used off-label in some congenital or cyclic neutropenia syndromes, though other G-CSF agents are more common.","evidence":"Limited"}]

Primary treatment for: Chemotherapy-induced neutropenia

Also treats: Febrile neutropenia, Bone marrow suppression

📋 Drug Information

Generic Name(s)Pegfilgrastim (6mg)
Brand Namepeg-religrast injection
ManufacturerReliance Life Sciences
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassANTI NEOPLASTICS
Action ClassGranulocyte-colony stimulating factor (G-CSF)
Route of AdministrationParenteral (subcutaneous injection)
StorageStore in a refrigerator at 2°C to 8°C. Do not freeze. Keep the prefilled syringe in its original carton to protect from light. Do not shake. Before use, allow the syringe to reach room temperature for about 30 minutes. Do not use if the solution is cloudy or contains particles.
Shelf LifeThe shelf life is typically 24 months from the date of manufacture when stored under recommended conditions. Refer to the product label for the exact expiry date.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Administer this medicine at least 24 hours after chemotherapy to avoid worsening myelosuppression.
2
Monitor patients for bone pain, which is common and can be managed with analgesics.
3
Educate patients about the signs of splenic rupture, such as left upper abdominal pain.
4
Assess renal function before administration, although no dose adjustment is typically needed.
5
Advise patients to avoid alcohol during chemotherapy to prevent additional bone marrow suppression.
6
Ensure proper storage and handling of the prefilled syringe to maintain efficacy.
7
Consider prophylactic use of antihistamines for mild allergic reactions if they occur.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Chemotherapy-induced neutropenia
This medicine is commonly prescribed to prevent this condition.
Likely Use
Fever
This medicine is not a primary fever reducer; it is used to prevent infections.
Not Primary
Bone pain
This medicine can cause bone pain as a side effect.
Likely Use

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionFollowing subcutaneous administration, this medicine is absorbed slowly, with peak serum concentrations occurring approximately 24 to 72 hours after injection. The bioavailability is approximately 60% to 70% relative to intravenous administration.
DistributionThe volume of distribution is approximately 170 mL/kg. It is distributed primarily in the vascular space and to a lesser extent in extravascular tissues.
Protein BindingNot established from the available information.
MetabolismThis medicine is metabolized via proteolytic degradation into small peptides and amino acids, primarily through the reticuloendothelial system. It does not undergo significant hepatic metabolism.
Half-LifeThe elimination half-life is approximately 15 to 80 hours, with a median of about 42 hours in cancer patients. The half-life is prolonged compared to non-pegylated filgrastim due to reduced renal clearance.
ExcretionExcretion is primarily through the kidneys, but the pegylation reduces renal clearance, leading to a longer half-life. Some excretion may also occur via the reticuloendothelial system.
BioavailabilityApproximately 60% to 70% following subcutaneous administration.
Onset of ActionThe onset of action is typically within 24 hours after administration, with an increase in absolute neutrophil count observed.
Peak Plasma TimePeak plasma concentration occurs approximately 24 to 72 hours after subcutaneous injection.
Duration of ActionThe duration of action is sustained, with a single dose maintaining elevated neutrophil counts for up to 2 weeks, covering the period of chemotherapy-induced neutropenia.

How It Works

This medicine binds to the granulocyte colony-stimulating factor (G-CSF) receptor on hematopoietic cells, thereby stimulating the proliferation, differentiation, and activation of neutrophil precursors. The pegylation of the molecule extends its half-life, allowing for once-per-chemotherapy-cycle dosing. This leads to an increased production of neutrophils and enhanced phagocytic activity, which helps the body combat infections during periods of chemotherapy-induced myelosuppression.

Mechanism Steps

1
Binding to G-CSF receptor: This medicine binds specifically to the G-CSF receptor expressed on the surface of hematopoietic progenitor cells.
2
Receptor activation and signaling: Binding triggers receptor dimerization and activation of intracellular signaling pathways, including JAK/STAT and MAP kinase pathways.
3
Stimulation of neutrophil production: This leads to increased proliferation and differentiation of neutrophil precursors in the bone marrow.
4
Release of mature neutrophils: Mature neutrophils are released into the bloodstream, increasing the absolute neutrophil count and enhancing immune defense against infections.

💡 How to Take peg-religrast injection

Strength: 6 mg/0.6 mL single-dose prefilled syringe for subcutaneous injection.

1This medicine is administered by a healthcare professional as a subcutaneous injection.
2It is usually given once per chemotherapy cycle, at least 24 hours after chemotherapy.
3The injection is typically given in the abdomen, thigh, or upper arm.
4Do not self-administer unless you have been trained by a healthcare professional.
5Follow your doctor's instructions regarding the timing of the injection relative to chemotherapy.

Dosage Information

Adult DosageThe recommended adult dose of this medicine is 6 mg administered subcutaneously once per chemotherapy cycle. It should not be given within 14 days before and 24 hours after chemotherapy. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. For patients with severe renal impairment, no dose adjustment is required, but monitoring is advised.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageNo overall differences in safety or effectiveness have been observed between elderly and younger patients. However, dose selection should be cautious, reflecting the greater frequency of decreased hepatic, renal, or cardiac function and of concomitant disease or other drug therapy.
Renal ImpairmentNo dose adjustment is required for renal impairment. However, caution is advised in patients with severe renal impairment due to reduced clearance.
Hepatic ImpairmentNo dose adjustment is required for hepatic impairment. However, monitor liver function in patients with pre-existing liver disease.
Maximum Daily DoseThe maximum recommended dose is 6 mg per chemotherapy cycle. Do not exceed this dose.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

No specific food interactions
No restrictions
This medicine is administered by injection and does not interact with food.

⏰ What to Do If You Miss a Dose

📌 If you miss a scheduled dose
→ Contact your doctor or nurse as soon as possible to reschedule.
💡 Do not self-administer an extra dose. Do not double the next dose.

⚠️ Side Effects of peg-religrast injection

✅ Common Side Effects

Bone pain (Common (up to 30%))
Use over-the-counter pain relievers like acetaminophen if approved by your doctor. Report persistent or severe pain.
Headache (Common (10-20%))
Rest and stay hydrated. Consult your doctor if headaches are severe or persistent.
Fatigue (Common (10-20%))
Get adequate rest and pace your activities. Inform your doctor if fatigue interferes with daily life.
Nausea (Common (5-10%))
Take small, frequent meals and avoid heavy, greasy foods. Ask your doctor about anti-nausea medications if needed.
Injection site reaction (Common (5-10%))
Apply a cold compress to the site. Do not rub the area. Report if redness or swelling worsens.

🚨 Serious Side Effects

Splenic rupture (Rare (<0.1%))
Seek immediate medical attention if you experience sudden severe pain in the upper left abdomen or left shoulder.
Acute respiratory distress syndrome (ARDS) (Rare (<0.1%))
Go to the emergency room if you develop difficulty breathing, rapid breathing, or bluish skin color.
Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Call emergency services if you experience rash, itching, swelling of the face or throat, or difficulty breathing.
Capillary leak syndrome (Rare (<0.1%))
Report symptoms such as swelling, sudden weight gain, or low blood pressure to your doctor immediately.

⚠️ Rare Side Effects

Myelodysplastic syndrome or acute myeloid leukemia
Discuss long-term risks with your oncologist, especially if you have underlying bone marrow disorders.
Glomerulonephritis
Report changes in urine color or decreased urine output to your doctor.
Aortitis
Seek medical attention for fever, abdominal pain, or unexplained fatigue.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Chemotherapy agents Major
Lithium Moderate
Topotecan Moderate
Bleomycin Moderate
Corticosteroids Minor

🚨 Major Interactions

  • Chemotherapy agents (e.g., cyclophosphamide, doxorubicin)
  • Lithium

⚡ Moderate Interactions

  • Topotecan
  • Bleomycin

🍷 Alcohol Interaction

There is no known direct interaction between this medicine and alcohol. However, alcohol can suppress bone marrow function and may worsen neutropenia. It is advisable to avoid alcohol during chemotherapy and while receiving this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity to pegfilgrastim, filgrastim, or any component of the formulation","Concurrent use with chemotherapy within 14 days before and 24 hours after administration","Patients with sickle cell disease (may precipitate severe sickle cell crisis)"]

⚠️ Warnings & Precautions

["Splenic rupture: Monitor for left upper abdominal or shoulder pain.","Acute respiratory distress syndrome: Monitor for respiratory symptoms.","Severe allergic reactions: Discontinue immediately if anaphylaxis occurs.","Capillary leak syndrome: Monitor for edema, hypotension, and hemoconcentration.","Sickle cell crisis: Use with caution in patients with sickle cell disease.","Glomerulonephritis: Monitor urine output and renal function.","Myelodysplastic syndrome/AML: Monitor long-term in patients with congenital neutropenia.","Aortitis: Report fever, abdominal pain, or malaise.","Injection site reactions: Rotate injection sites.","Do not administer within 14 days before or 24 hours after chemotherapy."]

🤱 Lactation Safety

It is not known whether this medicine is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

💊 Overdose Management

Overdose of this medicine may result in excessive leukocytosis and bone pain. There is no specific antidote. Treatment should be symptomatic and supportive. Monitor complete blood counts and provide appropriate care. In case of accidental overdose, contact your doctor immediately.

⏰ Missed Dose

This medicine is usually given as a single dose per chemotherapy cycle. If you miss a scheduled dose, contact your doctor or nurse as soon as possible to reschedule. Do not self-administer an extra dose. If you miss a dose, do not double the next dose.

Additional Safety Advice

General Safety

This medicine must be stored in the refrigerator at 2°C to 8°C and should not be frozen. Do not shake the prefilled syringe. Before injection, allow the syringe to reach room temperature for about 30 minutes. Do not use if the solution is cloudy or contains particles. This medicine is for single use only; discard any unused portion. Do not self-administer unless you have been trained by a healthcare professional. Inform your doctor if you have a history of sickle cell disease, kidney problems, or are pregnant or breastfeeding. Avoid close contact with people who have infections while your white blood cell count is low. Do not receive this medicine within 14 days before or 24 hours after chemotherapy. Always follow your doctor's instructions regarding the timing of the injection.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more susceptible to side effects such as fatigue and bone pain. Monitor closely and adjust supportive care as needed. No specific dose adjustment is required based on age alone.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before receiving this medicine. It should be used during pregnancy only if clearly needed. Effective contraception is recommended during treatment.

🏥 Post-Surgery Considerations

This medicine is not typically used in the post-surgical setting unless the patient is undergoing chemotherapy. Consult your doctor for specific guidance.

🦷 Dental Procedures

Inform your dentist that you are receiving this medicine. Dental procedures may need to be postponed if your white blood cell count is low. Consult your doctor before any dental work.

💚 Lifestyle Tips for Better Results

🏃
Maintain good hand hygiene to reduce infection risk.
🥗
Avoid crowds and people with known infections.
😴
Get adequate rest and sleep to support your immune system.
💧
Eat a balanced diet rich in fruits and vegetables.
🧘
Stay hydrated by drinking plenty of fluids.
🌞
Follow your doctor's advice on vaccinations and preventive care.

🏋️ Exercise Considerations

Mild to moderate exercise is generally safe, but avoid strenuous activities if you have bone pain or fatigue. Consult your doctor before starting any exercise program during chemotherapy.

🥗 Diet Recommendations

Include protein-rich foods to support immune function.
Eat small, frequent meals if you experience nausea.
Avoid raw or undercooked foods to prevent infections.
Stay well hydrated.
Limit alcohol intake.

💼 Impact on Daily Work & Life

This medicine may cause fatigue or dizziness, which can affect your ability to drive or operate machinery. Avoid driving if you feel unwell. Most patients can continue light work, but consult your doctor based on your condition.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. It is usually given as a single dose per chemotherapy cycle. If you experience severe side effects, your doctor may adjust or discontinue treatment.

📅 Long-Term Use Effects

Long-term use of this medicine is generally limited to the duration of chemotherapy. Potential long-term effects include an increased risk of myelodysplastic syndrome or acute myeloid leukemia in patients with congenital neutropenia. Regular monitoring of blood counts and clinical assessment is recommended. Report any unusual symptoms to your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Filgrastim

Short-acting G-CSF requiring daily injections.

Evidence: Well-established
Antibiotic prophylaxis

Used in some patients to prevent infections during neutropenia.

Evidence: Moderate

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

Live vaccines should be avoided during chemotherapy and while receiving this medicine due to the risk of infection. Inactivated vaccines may be given, but consult your doctor for timing.

📦 Storage Guide

✅ DO

Store in refrigerator at 2°C to 8°C

❌ DON'T

Do not freeze

✅ DO

Keep in original carton to protect from light

❌ DON'T

Do not shake the prefilled syringe

✅ DO

Allow to reach room temperature before injection

❌ DON'T

Do not use if solution is cloudy or contains particles

✈️ Traveling with This Medicine

When traveling with this medicine, carry it in its original packaging with the prescription label. Keep it in a cool, insulated bag with ice packs to maintain the temperature between 2°C and 8°C. Do not freeze. Carry a copy of your prescription and a letter from your doctor explaining the medical need. Check airline regulations for carrying injectable medications. If crossing time zones, consult your doctor about timing adjustments. Store securely and keep away from direct sunlight.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 58-year-old woman undergoing chemotherapy for breast cancer
She received this medicine after her first chemotherapy cycle. She experienced mild bone pain in her back and legs, which was managed with acetaminophen. Her white blood cell count remained stable, and she did not develop any infections. She was advised to avoid crowds and practice good hand hygiene.
💡 Lesson: Bone pain is a common but manageable side effect. Preventive measures like avoiding infections are crucial during chemotherapy.
👤 A 65-year-old man with lymphoma receiving chemotherapy
He was given this medicine to prevent neutropenia. He developed a low-grade fever and fatigue, which resolved with supportive care. His doctor monitored his blood counts regularly and adjusted his chemotherapy schedule accordingly.
💡 Lesson: Regular monitoring and prompt reporting of symptoms help manage side effects effectively.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: This medicine starts increasing white blood cell counts within 24 hours, with peak effects in 24 to 72 hours.

Q: How is this medicine given?

A: It is given as a subcutaneous injection, usually in the abdomen, thigh, or upper arm, by a healthcare professional.

Q: What are the common side effects?

A: Common side effects include bone pain, headache, fatigue, nausea, and injection site reactions.

Q: Can I take this medicine at home?

A: Only if you have been trained by a healthcare professional. Otherwise, it should be administered in a clinic.

Q: Is this medicine safe during pregnancy?

A: It should be used during pregnancy only if clearly needed. Consult your doctor.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for peg-religrast injection

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine can cure cancer.
    Fact: This medicine does not treat cancer itself; it helps prevent infections by boosting white blood cell counts during chemotherapy.
  • Myth: This medicine can be taken at home without medical supervision.
    Fact: This medicine should be administered by a healthcare professional, although some patients may be trained for self-injection.
  • Myth: This medicine can be given at any time during chemotherapy.
    Fact: It must be given at least 24 hours after chemotherapy and not within 14 days before the next cycle.

🔄 Alternative Options

Generic Alternatives

  • Pegfilgrastim

Brand Alternatives

  • Neulasta
  • Fulphila
  • Udenyca
  • Ziextenzo

📊 Comparison with Similar Medicines

[{"feature":"Dosing frequency","this_medicine":"Once per chemotherapy cycle","filgrastim":"Daily injections"},{"feature":"Half-life","this_medicine":"15-80 hours","filgrastim":"3.5 hours"},{"feature":"Route","this_medicine":"Subcutaneous","filgrastim":"Subcutaneous or intravenous"}]

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