Celvestrant PFS Injection: A Comprehensive Guide
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- Sudden shortness of breath or chest pain
- Swelling, pain, or redness in one leg
- Severe allergic reaction (rash, itching, swelling of face or throat)
- Yellowing of skin or eyes
- Unusual bleeding or bruising
- Severe abdominal pain
If experiencing severe symptoms, call emergency services immediately.
What is celvestrant pfs injection used for?
This medicine is a prescription injection used to treat hormone receptor-positive advanced breast cancer in postmenopausal women. It works by blocking and degrading estrogen receptors, helping to slow cancer growth.
- Generic Name: Fulvestrant
- Manufacturer: Celon Laboratories Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 celvestrant pfs injection के बारे में (Hindi Summary)
उपयोग: यह दवा स्तन कैंसर के इलाज में उपयोग की जाती है, विशेष रूप से उन महिलाओं में जो रजोनिवृत्ति के बाद हैं और जिनका कैंसर हार्मोन रिसेप्टर पॉजिटिव है। यह इंजेक्शन के रूप में दी जाती है और एस्ट्रोजन रिसेप्टर को ब्लॉक करके कैंसर कोशिकाओं की वृद्धि को रोकती है।
साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में इंजेक्शन स्थल पर दर्द, सूजन, थकान, मतली, सिरदर्द और गर्म चमक शामिल हैं। गंभीर दुष्प्रभावों में रक्त के थक्के, एलर्जी प्रतिक्रिया और लीवर की समस्या हो सकती है। किसी भी गंभीर लक्षण पर तुरंत डॉक्टर से संपर्क करें।
सुरक्षा सलाह: यह दवा केवल डॉक्टर द्वारा दी जानी चाहिए। गर्भवती या स्तनपान कराने वाली महिलाओं को यह दवा नहीं लेनी चाहिए। उपचार के दौरान और अंतिम खुराक के एक साल बाद तक गर्भनिरोधक का उपयोग करें। शराब से बचें। रक्त के थक्के के लक्षणों पर ध्यान दें।
💊 celvestrant pfs injection Uses & Benefits
[{"condition":"Hormone receptor-positive advanced breast cancer","description":"Used in postmenopausal women whose cancer has progressed after antiestrogen therapy.","evidence":"Well-established"},{"condition":"Metastatic breast cancer","description":"Indicated for the treatment of hormone receptor-positive metastatic breast cancer in postmenopausal women.","evidence":"Well-established"}]
Off-label uses: [{"condition":"Premenopausal breast cancer","description":"Sometimes used off-label in combination with ovarian suppression, but not standard.","evidence":"Limited"}]
Primary treatment for: Breast cancer
Also treats: Hormone receptor-positive breast cancer, Metastatic breast cancer
📋 Drug Information
| Generic Name(s) | Fulvestrant |
| Brand Name | Celvestrant PFS Injection |
| Manufacturer | Celon Laboratories Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | ANTI NEOPLASTICS |
| Action Class | Estrogen receptor antagonist |
| Route of Administration | Intramuscular |
| Storage | Store in a refrigerator at 2°C to 8°C. Do not freeze. Keep the prefilled syringe in its original carton to protect from light. |
| Shelf Life | Refer to the expiry date on the pack. Do not use after the expiry date. |
| WHO Guideline | Not established from the available information. |
| ICMR Guideline | Not established from the available information. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
This medicine is a selective estrogen receptor degrader. It binds to estrogen receptors with high affinity and causes the receptor to be degraded, leading to a reduction in estrogen signaling. This inhibits the growth of estrogen-dependent breast cancer cells.
Mechanism Steps
💡 How to Take celvestrant pfs injection
Strength: 250 mg prefilled syringe for intramuscular injection
Dosage Information
| Adult Dosage | The recommended adult dose is 250 mg administered intramuscularly once a month, with an additional 250 mg dose given two weeks after the initial dose. The injection should be given slowly over 1-2 minutes into the buttock. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician. |
| Elderly Dosage | No specific dose adjustment is required for elderly patients based on age alone. However, individualization by a clinician is recommended. |
| Renal Impairment | No dose adjustment is required for mild to moderate renal impairment. Use with caution in severe renal impairment. |
| Hepatic Impairment | No dose adjustment is required for mild to moderate hepatic impairment. Use with caution in severe hepatic impairment. |
| Maximum Daily Dose | The maximum recommended dose is 250 mg per month, with an additional 250 mg dose two weeks after the initial dose. |
Dosage Timeline
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of celvestrant pfs injection
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Warfarin | Major | |
| CYP3A4 inhibitors | Moderate |
🚨 Major Interactions
- Warfarin
⚡ Moderate Interactions
- CYP3A4 inhibitors
🍷 Alcohol Interaction
Alcohol may increase the risk of liver problems. It is advisable to avoid alcohol while receiving this medicine.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Pregnancy","Breastfeeding","Known hypersensitivity to fulvestrant or any component","Severe liver impairment"]
⚠️ Warnings & Precautions
["This medicine should only be administered by a healthcare professional.","Use effective contraception during treatment and for one year after the last dose.","Avoid alcohol due to increased risk of liver problems.","Monitor for signs of blood clots.","Inform your doctor if you have a history of bleeding disorders."]
🤱 Lactation Safety
It is not known if this medicine passes into breast milk. Because of the potential for serious adverse reactions in nursing infants, breastfeeding should be discontinued during treatment and for one year after the last dose.
💊 Overdose Management
There is no specific antidote for overdose. Treatment should be symptomatic and supportive. In case of suspected overdose, contact a poison control center or emergency room immediately.
⏰ Missed Dose
If you miss a scheduled dose, contact your healthcare provider as soon as possible to reschedule. Do not attempt to self-administer.
Additional Safety Advice
This medicine must be administered by a healthcare professional only. Do not attempt to self-inject. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding, as this medicine can harm the unborn baby. Use effective contraception during treatment and for at least one year after the last dose if you are of childbearing potential. Tell your doctor about all other medicines you are taking, especially blood thinners, as interactions may occur. Avoid alcohol while on this medicine as it may worsen liver effects. Report any unusual bleeding, bruising, or signs of infection immediately. Keep all appointments for monitoring blood tests and injections.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients may be more susceptible to side effects like fatigue and blood clots. Regular monitoring is advised. No specific dose adjustment is required based on age alone.
🤰 Pregnancy Planning (TTC)
This medicine can harm the unborn baby. Women of childbearing potential must use effective contraception during treatment and for one year after the last dose. If you are planning pregnancy, consult your doctor before stopping the medicine.
🏥 Post-Surgery Considerations
This medicine may increase the risk of bleeding or blood clots after surgery. Inform your surgeon that you are on this medicine. Your doctor will advise on when to resume treatment after surgery.
🦷 Dental Procedures
Inform your dentist that you are receiving this medicine, as it may affect bleeding and healing. Your dentist may consult with your oncologist before performing any procedures.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
This medicine may cause fatigue or bone pain. Avoid strenuous exercise if you feel unwell. Consult your doctor before starting any new exercise regimen.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause fatigue, which can affect your ability to work or drive. Plan your activities around your injection schedule. Most patients can continue their normal activities, but listen to your body and rest when needed.
🛑 When to Stop This Medicine
Do not stop this medicine without consulting your doctor. Treatment duration is determined by your oncologist based on your response and side effects. If you experience severe side effects, contact your doctor immediately.
📅 Long-Term Use Effects
Long-term use of this medicine may lead to reduced bone density, so monitoring of bone health is recommended. Liver function should be checked periodically. Some patients may experience chronic fatigue or hot flushes. Regular follow-up with your oncologist is essential to manage any long-term effects.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Oral medications like anastrozole or letrozole can be alternatives for some patients.
Evidence: Well-establishedAnother hormonal therapy that may be used if appropriate.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
This medicine may affect your immune system. Live vaccines should be avoided during treatment. Consult your doctor about appropriate vaccinations.
📦 Storage Guide
✅ DO
Store in a 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 remove from carton until ready to use
✅ DO
Keep out of reach of children
❌ DON'T
Do not use if expired
✈️ Traveling with This Medicine
When traveling, carry this medicine in its original packaging with a copy of your prescription. It must be stored in a refrigerator at 2°C to 8°C; use a cooler bag with ice packs during travel. Inform airport security about the medication and any needles. Plan your travel around your monthly injection schedule, and if crossing time zones, consult your doctor about adjusting the timing. Check customs regulations for carrying prescription medications.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: This medicine starts working gradually, and effects on tumor growth may be seen over weeks to months. Your doctor will monitor your progress.
A: It is given as an intramuscular injection into the buttock by a healthcare professional, usually once a month.
A: Avoid alcohol, and inform your doctor about all other medicines you are taking. Use contraception if you are of childbearing potential.
🤔 Common Patient Concerns
🔄 Substitutes for celvestrant pfs injection
View AllAlternative brands with exact same active ingredient:
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fulveser injectionSamarth Life Sciences Pvt Ltd ₹7,425.00 27.3% CHEAPER
-
faslomax 250mg injectionGLS Pharma Ltd. ₹11,738.44 15% COSTLIER
-
fulvant injectionArechar Healthcare ₹12,314.06 20.6% COSTLIER
-
fulviglen 250mg injectionGlenmark Pharmaceuticals Ltd ₹12,400.00 21.5% COSTLIER
-
strantas 250mg injectionIntas Pharmaceuticals Ltd ₹12,468.00 22.1% COSTLIER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine can be self-injected at home.
Fact: This medicine must be administered by a healthcare professional. - Myth: This medicine is safe during pregnancy.
Fact: This medicine can harm the unborn baby and is contraindicated in pregnancy.
🔄 Alternative Options
Generic Alternatives
- Fulvestrant 250 mg prefilled syringe
Brand Alternatives
- Celvestrant PFS Injection