Apexvir 19 Tablet (Favipiravir 400 mg): Complete Medicine Guide
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- Yellowing of the skin or eyes (jaundice)
- Dark-colored urine or pale stools
- Severe abdominal pain or persistent vomiting
- Difficulty breathing or swelling of the face, lips, or throat
- Sudden severe joint pain with redness and swelling
- Persistent fever, sore throat, or unusual bleeding
- Extreme fatigue or confusion
If experiencing severe symptoms, call emergency services immediately.
What is feravir 400 tablet used for?
This medicine is an antiviral tablet containing Favipiravir 400 mg. It is used to treat certain RNA viral infections such as influenza and, in some countries, COVID-19 under restricted conditions. It works by blocking the virus's ability to replicate. It must be taken only under a doctor's prescription.
- Generic Name: Favipiravir (400mg)
- Manufacturer: Xenon Pharmaceuticals
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 feravir 400 tablet के बारे में (Hindi Summary)
उपयोग: यह दवा फेविपिराविर 400 मिलीग्राम युक्त एक एंटीवायरल टैबलेट है। इसका उपयोग इन्फ्लूएंजा और कुछ देशों में कोविड-19 के इलाज के लिए सीमित परिस्थितियों में किया जाता है। यह वायरस के प्रजनन को रोककर काम करती है। इस दवा का सेवन केवल डॉक्टर के पर्चे पर ही करें। गर्भवती महिलाओं, स्तनपान कराने वाली माताओं और गंभीर जिगर या गुर्दे की बीमारी वाले रोगियों को इसका उपयोग सावधानी से करना चाहिए।
साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में मतली, उल्टी, दस्त, पेट दर्द, सिरदर्द और थकान शामिल हैं। कुछ रोगियों में यूरिक एसिड का स्तर बढ़ सकता है जिससे गाउट का दौरा पड़ सकता है। लीवर एंजाइम बढ़ने की भी संभावना होती है। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन अगर आंखों या त्वचा का रंग पीला पड़े, गहरे रंग का पेशाब आए, या सांस लेने में कठिनाई हो तो तुरंत डॉक्टर से संपर्क करें।
सुरक्षा सलाह: इस दवा को डॉक्टर के बताए अनुसार ही लें। खुराक या अवधि में बदलाव न करें। इसे पानी के साथ निगलें, भोजन के बाद लेने से पेट की परेशानी कम हो सकती है। इलाज के दौरान शराब का सेवन बिल्कुल न करें। अगर आपको लीवर, किडनी, गाउट या यूरिक एसिड की समस्या है तो डॉक्टर को पहले बताएं। गर्भवती महिलाओं और स्तनपान कराने वाली माताओं को यह दवा नहीं लेनी चाहिए। दवा को ठंडी और सूखी जगह पर, बच्चों की पहुंच से दूर रखें।
💊 feravir 400 tablet Uses & Benefits
[{"condition":"Influenza (seasonal and pandemic strains)","description":"This medicine is used to treat influenza in adults when other antiviral options are not suitable or available, particularly in settings where resistance or contraindications limit standard therapy.","evidence":"Established in some countries; regulatory approval varies"},{"condition":"COVID-19 (under restricted emergency use)","description":"In certain countries, this medicine has been authorized for emergency use in mild to moderate COVID-19, but evidence of benefit remains uncertain and it is not universally recommended.","evidence":"Limited and conflicting; not universally approved"},{"condition":"Other RNA viral infections (investigational)","description":"This medicine has been studied in a few other RNA viral infections, but routine use outside clinical trials or specific national guidelines is not established.","evidence":"Investigational"}]
Off-label uses: [{"condition":"Severe viral infections in immunocompromised patients","description":"Occasionally considered on a case-by-case basis when no approved alternative exists, but this is not standard practice.","evidence":"Limited"}]
Primary treatment for: Influenza
Also treats: COVID-19 (under emergency use in some countries)
📋 Drug Information
| Generic Name(s) | Favipiravir (400mg) |
| Brand Name | feravir 400 tablet |
| Manufacturer | Xenon Pharmaceuticals |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | ANTI INFECTIVES |
| Action Class | |
| Route of Administration | Oral |
| Storage | Store at room temperature (15-30°C) in a dry place, away from direct sunlight and moisture. Keep the tablets in their original packaging. |
| Shelf Life | Not established from the available information. Refer to the packaging for the expiry date. |
| WHO Guideline | Not established from the available information. Guidelines vary by country and are updated regularly. |
| ICMR Guideline | Not established from the available information. Please refer to the latest ICMR guidelines for specific recommendations. |
👨⚕️ 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 works by selectively inhibiting the RNA-dependent RNA polymerase enzyme that many RNA viruses need to replicate their genetic material. By mimicking a natural building block of RNA, it gets incorporated into the growing viral RNA chain and blocks further extension, which stops the virus from multiplying. This action is most effective against viruses that rely heavily on this enzyme for their life cycle.
Mechanism Steps
💡 How to Take feravir 400 tablet
Strength: Favipiravir 400 mg immediate-release tablet
Dosage Information
| Adult Dosage | The usual adult dose of this medicine is determined by the prescribing clinician based on the specific infection, its severity, and the patient's overall health. A common regimen for influenza is 1600 mg twice daily on day 1, followed by 600 mg twice daily on days 2 to 5, but this may vary. For COVID-19, regimens such as 1800 mg twice daily on day 1 followed by 800 mg twice daily for up to 14 days have been used in some countries. 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 | Elderly patients may be more sensitive to the side effects of this medicine. Dose selection should be cautious, and kidney and liver function should be considered. Consult a doctor for individualized dosing. |
| Renal Impairment | Dose adjustment may be required in patients with kidney impairment. Consult your doctor for specific guidance based on your kidney function tests. |
| Hepatic Impairment | Dose adjustment may be required in patients with liver impairment. Consult your doctor for specific guidance based on your liver function tests. |
| Maximum Daily Dose | The maximum daily dose depends on the indication and is determined by the prescribing clinician. Do not exceed the prescribed dose. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of feravir 400 tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Pyrazinamide | Major | |
| Theophylline | Major | |
| Warfarin | Moderate | |
| Paracetamol | Moderate | |
| Antacids | Minor |
🚨 Major Interactions
- Pyrazinamide
- Theophylline
⚡ Moderate Interactions
- Warfarin
- Paracetamol (acetaminophen)
🍷 Alcohol Interaction
Avoid consuming alcohol while taking this medicine because it can increase the risk of liver damage and may worsen side effects such as nausea and dizziness.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known hypersensitivity or allergy to Favipiravir or any component of the tablet","Pregnancy or suspected pregnancy","Breastfeeding","Severe liver impairment","Severe kidney impairment (dose adjustment may be required; consult doctor)","History of gout or hyperuricemia (relative contraindication; use with caution)"]
⚠️ Warnings & Precautions
["This medicine should only be used under the supervision of a qualified clinician.","Do not start or stop this medicine without consulting your doctor.","Use effective contraception during treatment and for at least seven days after the last dose if you are a woman of childbearing potential.","Avoid alcohol completely during treatment.","Inform your doctor if you have liver disease, kidney disease, gout, or high uric acid levels.","Report any signs of liver problems such as yellowing of eyes or skin, dark urine, or severe fatigue.","Do not share this medicine with anyone else, even if they have similar symptoms.","Keep all follow-up appointments for monitoring."]
🤱 Lactation Safety
It is not known whether this medicine passes into breast milk. Because of the potential for serious side effects in a breastfed infant, breastfeeding is not recommended during treatment. Consult your doctor for guidance.
💊 Overdose Management
If you suspect an overdose, seek immediate medical attention or contact a poison control center. There is no specific antidote for this medicine. Treatment is supportive and symptomatic, focusing on maintaining vital functions and managing any adverse effects.
⏰ Missed Dose
If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose to make up for a missed one.
Additional Safety Advice
Take this medicine exactly as prescribed by your doctor and do not change the dose or duration on your own. Swallow the tablet whole with a glass of water, with or without food, but taking it after a meal may reduce stomach upset. Avoid alcohol completely while on this medicine because it can increase the risk of liver problems. Inform your doctor if you have liver disease, kidney disease, gout, or a history of high uric acid levels before starting this medicine. Use a reliable method of contraception during treatment and for at least seven days after the last dose if you are a woman of childbearing potential. Do not breastfeed while taking this medicine. Keep all follow-up appointments so your doctor can monitor your liver enzymes, blood counts, and uric acid levels if needed. Store the tablets in their original packaging, away from moisture and direct sunlight, and keep them out of reach of children.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients may be more susceptible to side effects such as dizziness, liver enzyme elevation, and uric acid increase. Kidney and liver function should be assessed before and during treatment. Dose adjustments may be necessary. Close monitoring is advised.
🤰 Pregnancy Planning (TTC)
This medicine is not recommended during pregnancy or if you are planning to become pregnant. Women of childbearing potential should use effective contraception during treatment and for at least seven days after the last dose. If you become pregnant while taking this medicine, inform your doctor immediately.
🏥 Post-Surgery Considerations
If you have recently undergone surgery, inform your surgeon and anesthesiologist that you are taking this medicine. It may affect liver function and interact with other medications used during surgery. Your doctor will decide if any dose adjustment or monitoring is needed.
🦷 Dental Procedures
Inform your dentist that you are taking this medicine before any dental procedure. There is no specific contraindication, but your dentist may need to know about your medication for safe management.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
While taking this medicine, you may feel tired or dizzy. Avoid strenuous exercise until you feel fully recovered. Light activity such as walking is fine if you feel up to it, but listen to your body and rest when needed.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness or fatigue in some people. Avoid driving or operating heavy machinery if you feel dizzy or drowsy. It is advisable to rest and recover fully before returning to work, especially if you have a fever or are feeling weak.
🛑 When to Stop This Medicine
Do not stop taking this medicine without consulting your doctor. Complete the full course as prescribed, even if you feel better. If you experience severe side effects, contact your doctor immediately for advice on whether to continue or stop.
📅 Long-Term Use Effects
Long-term effects of this medicine are not well established because it is typically used for short courses. Prolonged use may increase the risk of liver enzyme elevation, uric acid increase, and blood cell abnormalities. Regular monitoring of liver function, uric acid, and blood counts may be advised if extended treatment is necessary. Always follow your doctor's instructions regarding duration of treatment.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Another antiviral medicine for influenza, taken orally.
Evidence: Well-establishedA single-dose oral antiviral for influenza.
Evidence: Well-establishedRest, hydration, and fever control with paracetamol can help manage symptoms while the body fights the virus.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
This medicine does not replace vaccination. Annual influenza vaccination is recommended for eligible individuals. If you are due for any vaccine, inform your doctor, as the timing may need to be adjusted while you are on this medicine.
📦 Storage Guide
✅ DO
Store at room temperature (15-30°C)
❌ DON'T
Do not refrigerate unless specified
✅ DO
Keep in original container
❌ DON'T
Do not transfer to unmarked containers
✅ DO
Keep away from direct sunlight
❌ DON'T
Do not store in bathroom cabinet
✈️ Traveling with This Medicine
When traveling, carry this medicine in its original packaging along with a copy of your prescription. Keep it in your hand luggage to avoid loss or temperature extremes. Store it at room temperature, away from direct sunlight and moisture. If crossing time zones, continue your dosing schedule as close to the prescribed times as possible; consult your doctor for specific advice. Check the customs regulations of your destination country regarding prescription medicines.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: This medicine starts working within a day or two, but you may not feel the full effect immediately. It is important to complete the full course as prescribed.
A: Some medicines can interact with this medicine. Always inform your doctor about all prescription, over-the-counter, and herbal products you are taking.
A: If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double dose.
A: Pediatric dosing is not established from available information. Consult a pediatrician for guidance.
🤔 Common Patient Concerns
🔄 Substitutes for feravir 400 tablet
View AllAlternative brands with exact same active ingredient:
-
Faviblu 400mg TabletBlue Cross Laboratories Ltd ₹543.75 50.6% CHEAPER
-
fluguard 400 tabletSun Pharmaceutical Industries Ltd ₹609.38 44.6% CHEAPER
-
Favivent 400mg TabletJenburkt Pharmaceuticals Ltd ₹646.88 41.2% CHEAPER
-
fenzavir 400mg tabletLeeford Healthcare Ltd ₹650.00 40.9% CHEAPER
-
Foivir 400mg TabletIntas Pharmaceuticals Ltd ₹656.25 40.3% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine can cure any viral infection.
Fact: This medicine is only effective against certain RNA viruses and must be prescribed for specific indications. It is not a broad-spectrum cure for all viral illnesses. - Myth: This medicine is safe to take without a prescription.
Fact: This medicine is a prescription drug and should only be taken under medical supervision due to potential side effects and interactions. - Myth: This medicine can be taken during pregnancy without risk.
Fact: This medicine is not recommended during pregnancy as it may harm the developing baby. Effective contraception is advised during treatment.
🔄 Alternative Options
Generic Alternatives
- Favipiravir 400 mg tablet (generic versions may be available)
Brand Alternatives
- Apexvir 19 Tablet