Rifagut 400 Tablet (Rifaximin 400 mg): Complete Medicine Guide
When to Call Your Doctor IMMEDIATELY
- Blood in your stool or vomit
- Severe abdominal pain that does not go away
- High fever with chills
- Signs of a severe allergic reaction such as swelling of the face, lips, or throat, or difficulty breathing
- Yellowing of the skin or eyes (jaundice)
- Unusual bleeding or bruising
- Persistent diarrhoea that worsens or does not improve after 48 hours
- Severe dizziness or fainting
If experiencing severe symptoms, call emergency services immediately.
What is rifameg 400mg tablet used for?
This medicine contains rifaximin 400 mg, a non-absorbable antibiotic used to treat hepatic encephalopathy, travellers' diarrhoea, and irritable bowel syndrome with diarrhoea. It works by killing harmful bacteria in the gut. It is usually taken orally, with or without food, and the dose depends on the condition being treated. Common side effects include nausea, stomach pain, and headache. It should not be used for bloody diarrhoea or without a doctor's prescription.
- Generic Name: Rifaximin (400mg)
- Manufacturer: Ridhima Biocare
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 rifameg 400mg tablet के बारे में (Hindi Summary)
उपयोग: यह दवा रिफैक्सिमिन 400 मिलीग्राम की एक टैबलेट है, जिसका उपयोग मुख्य रूप से लीवर की बीमारी से जुड़ी हेपेटिक एन्सेफेलोपैथी, यात्रियों के दस्त, और इरिटेबल बाउल सिंड्रोम (IBS-D) के इलाज के लिए किया जाता है। यह आंतों में मौजूद हानिकारक बैक्टीरिया को मारकर उनकी संख्या कम करती है, जिससे अमोनिया और अन्य विषाक्त पदार्थों का उत्पादन घटता है। यह दवा खून में बहुत कम मात्रा में अवशोषित होती है, इसलिए इसके दुष्प्रभाव कम होते हैं। इसे डॉक्टर के निर्देशानुसार ही लें, और बिना पूछे कभी न रोकें।
साइड इफेक्ट्स: इस दवा के आम दुष्प्रभावों में जी मिचलाना, उल्टी, पेट दर्द, पेट फूलना, गैस, सिरदर्द और चक्कर आना शामिल हैं। ये आमतौर पर हल्के होते हैं और कुछ समय में ठीक हो जाते हैं। कभी-कभी गंभीर एलर्जी, दस्त, या खून की कमी जैसी समस्याएं हो सकती हैं। अगर आपको सांस लेने में तकलीफ, चेहरे या गले में सूजन, या लगातार दस्त हो, तो तुरंत डॉक्टर से संपर्क करें।
सुरक्षा सलाह: इस दवा को लेने से पहले अपने डॉक्टर को अपनी सभी दवाओं और एलर्जी के बारे में बताएं। अगर आपको लीवर की बीमारी है, तो डॉक्टर की सलाह से ही लें। गर्भवती या स्तनपान कराने वाली महिलाएं डॉक्टर से सलाह लें। दस्त के दौरान पानी और तरल पदार्थ का सेवन अधिक करें। दवा को डॉक्टर के बताए अनुसार ही लें, और खुराक न बढ़ाएं। इसे ठंडी और सूखी जगह पर रखें, बच्चों की पहुंच से दूर रखें।
💊 rifameg 400mg tablet Uses & Benefits
- [{"condition":"Hepatic encephalopathy","description":"This medicine is used to reduce the risk of recurrent episodes of hepatic encephalopathy in adults with advanced liver disease.
- It works by decreasing ammonia-producing bacteria in the gut.","evidence":"Well-established"},{"condition":"Travellers' diarrhoea","description":"This medicine is used to treat diarrhoea caused by non-invasive strains of bacteria such as Escherichia coli in adults.
- It is not effective for diarrhoea caused by invasive bacteria or parasites.","evidence":"Well-established"},{"condition":"Irritable bowel syndrome with diarrhoea (IBS-D)","description":"This medicine is used to treat adults with IBS-D to reduce diarrhoea and abdominal bloating.
- It is usually given for a short course of 14 days.","evidence":"Well-established"},{"condition":"Small intestinal bacterial overgrowth (SIBO)","description":"This medicine is sometimes used to treat bacterial overgrowth in the small intestine, which can cause bloating, diarrhoea, and malabsorption.
- It is considered an off-label use in some countries.","evidence":"Moderate"}]
Off-label uses: [{"condition":"Clostridioides difficile infection (mild to moderate)","description":"This medicine is sometimes used as an alternative treatment for mild C. difficile infection when first-line options cannot be used. This is not a standard first-line treatment.","evidence":"Limited"},{"condition":"Diverticular disease","description":"This medicine has been studied for reducing symptoms of diverticular disease, but evidence is not strong enough for routine use.","evidence":"Limited"},{"condition":"Prevention of travellers' diarrhoea","description":"This medicine is sometimes prescribed to prevent travellers' diarrhoea in high-risk travellers, but this is not a routine recommendation for all travellers.","evidence":"Limited"}]
Primary treatment for: Hepatic encephalopathy
Also treats: Travellers' diarrhoea, Irritable bowel syndrome with diarrhoea (IBS-D), Small intestinal bacterial overgrowth (SIBO)
📋 Drug Information
| Generic Name(s) | Rifaximin (400mg) |
| Brand Name | rifameg 400mg tablet |
| Manufacturer | Ridhima Biocare |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | GASTRO INTESTINAL |
| Action Class | RNA polymerase inhibitors- Rifamycins |
| Route of Administration | Oral |
| Storage | Store this medicine at room temperature between 20°C and 25°C (68°F to 77°F). Keep it in the original container, tightly closed, away from moisture and direct sunlight. Do not store in the bathroom. |
| Shelf Life | The shelf life of this medicine is typically 24 months from the date of manufacture. Check the expiry date on the pack before use. |
| WHO Guideline | The World Health Organization (WHO) does not specifically recommend rifaximin for routine treatment of travellers' diarrhoea. WHO guidelines for travellers' diarrhoea generally focus on fluid replacement and, when indicated, antibiotics such as azithromycin or fluoroquinolones. Rifaximin may be considered in some settings, but it is not a first-line WHO recommendation. |
| ICMR Guideline | The Indian Council of Medical Research (ICMR) has not issued specific guidelines for rifaximin use. However, it is used in India for hepatic encephalopathy and travellers' diarrhoea as per standard medical practice. |
👨⚕️ 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 binding to the beta-subunit of bacterial DNA-dependent RNA polymerase, which is an enzyme that bacteria need to make proteins. By blocking this enzyme, the medicine stops the bacteria from producing essential proteins and prevents them from multiplying. Because this medicine is poorly absorbed from the gut, it acts mainly inside the intestines and targets the bacteria that live there. This reduces the number of harmful bacteria that produce toxins and ammonia, which are substances that can worsen liver-related brain problems. The medicine is bactericidal against many gram-positive and gram-negative bacteria, including Escherichia coli, but it does not work against invasive bacteria or parasites. This local action in the gut is why the medicine has fewer systemic side effects compared to antibiotics that are absorbed into the bloodstream.
Mechanism Steps
💡 How to Take rifameg 400mg tablet
Strength: This medicine is available as an immediate-release oral tablet containing 400 mg of rifaximin.
Dosage Information
| Adult Dosage | The usual adult dose of this medicine for hepatic encephalopathy is 550 mg taken orally three times a day, but the 400 mg strength is also used in some regimens. For travellers' diarrhoea, the usual dose is 200 mg three times a day for 3 days, but the 400 mg strength may be used as a single dose or as directed by your doctor. For IBS-D, the usual dose is 550 mg three times a day for 14 days. The dose must be individualized by a qualified clinician based on the indication, age, weight, renal and hepatic function. Do not change the dose without consulting your doctor. |
| 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, elderly patients may have reduced liver or kidney function, so the dose should be individualized by a qualified clinician. |
| Renal Impairment | No dose adjustment is needed for patients with kidney problems because this medicine is poorly absorbed and mainly excreted in the faeces. |
| Hepatic Impairment | No dose adjustment is needed for patients with mild to moderate liver disease. In patients with severe liver disease (Child-Pugh Class C), the medicine may be absorbed more than usual, but dose adjustment is not routinely recommended. Use with caution and monitor as advised by your doctor. |
| Maximum Daily Dose | The maximum recommended daily dose of this medicine is 1650 mg per day (550 mg three times a day) for hepatic encephalopathy and IBS-D. For travellers' diarrhoea, the maximum is 600 mg per day (200 mg three times a day) or as a single 400 mg dose. Do not exceed the dose prescribed by your doctor. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of rifameg 400mg tablet
✅ 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 | |
| Oral contraceptives | Moderate | |
| Cyclosporine | Moderate | |
| Midazolam | Moderate | |
| Antacids | Minor | |
| Activated charcoal | Minor |
🚨 Major Interactions
- Warfarin
- Oral contraceptives
⚡ Moderate Interactions
- Cyclosporine
- Midazolam
🍷 Alcohol Interaction
There is no known direct interaction between this medicine and alcohol. However, alcohol can worsen liver disease and may increase the risk of hepatic encephalopathy. It is best to avoid alcohol while taking this medicine, especially if you have liver problems.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known hypersensitivity or allergy to rifaximin or other rifamycin antibiotics","Bowel obstruction or severe inflammatory bowel disease with risk of increased absorption","Children under 12 years of age for travellers' diarrhoea (safety not established)","Patients with rare hereditary problems of galactose intolerance, Lapp lactase deficiency, or glucose-galactose malabsorption (due to lactose content)"]
⚠️ Warnings & Precautions
["This medicine should not be used for bloody diarrhoea or diarrhoea with fever, as these may indicate a more serious infection.","If diarrhoea persists or worsens after 48 hours, stop the medicine and consult your doctor.","This medicine may reduce the effectiveness of oral contraceptives; use additional contraception.","Use with caution in patients with liver disease; monitor liver function.","This medicine may cause dizziness; avoid driving or operating machinery until you know how it affects you.","Do not share this medicine with others, even if they have similar symptoms.","Keep out of reach of children."]
🤱 Lactation Safety
It is not known whether this medicine passes into breast milk in significant amounts. Because it is poorly absorbed, the amount in breast milk is likely to be very small. However, consult your doctor before breastfeeding while taking this medicine.
💊 Overdose Management
There is no specific antidote for an overdose of this medicine. In case of overdose, seek immediate medical attention. Treatment should be symptomatic and supportive. Because this medicine is poorly absorbed, serious toxicity from overdose is unlikely, but monitoring may be needed.
⏰ Missed Dose
If you miss a dose of this medicine, 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 two doses at the same time to make up for a missed dose.
Additional Safety Advice
Before you start this medicine, tell your doctor if you are allergic to rifaximin, rifampin, or any other antibiotic. Inform your doctor about all other medicines you take, especially blood thinners like warfarin, because this medicine can increase the effect of warfarin and raise the risk of bleeding. Do not start or stop any medicine without your doctor's advice. If you have liver disease, your doctor may need to monitor your liver function more closely. This medicine is not recommended during pregnancy unless clearly needed, and it may pass into breast milk in small amounts, so discuss breastfeeding with your doctor. Do not use this medicine to treat diarrhoea that is bloody or accompanied by fever or chills, as these may be signs of a more serious infection. Drink plenty of fluids to avoid dehydration, especially if you have diarrhoea. Take this medicine exactly as prescribed, and do not skip doses or take extra doses. If you miss a dose, take it as soon as you remember, but if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose. Store this medicine at room temperature, away from moisture and direct sunlight, and keep it out of reach of children. If you experience any severe or unusual symptoms, seek medical help immediately.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients may be more sensitive to the side effects of this medicine, such as dizziness. They may also have reduced liver or kidney function, so the dose should be individualized by a doctor. Regular monitoring may be advised.
🤰 Pregnancy Planning (TTC)
If you are planning to become pregnant, discuss with your doctor before taking this medicine. It should be used during pregnancy only if clearly needed. If you become pregnant while taking this medicine, contact your doctor immediately.
🏥 Post-Surgery Considerations
If you are scheduled for surgery, inform your surgeon that you are taking this medicine. It may need to be stopped before surgery, especially if you are also taking blood thinners. Follow your doctor's instructions.
🦷 Dental Procedures
Inform your dentist that you are taking this medicine before any dental procedure. There are no specific precautions, but it is important for your dentist to know your complete medication list.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
This medicine may cause dizziness in some people. If you feel dizzy, avoid strenuous exercise or activities that require balance until you feel normal. Otherwise, regular exercise is encouraged as part of a healthy lifestyle.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness or headache in some people, which could affect your ability to drive or operate machinery. Avoid these activities until you know how the medicine affects you. Otherwise, most people can continue their normal daily activities while taking this medicine.
🛑 When to Stop This Medicine
Do not stop taking this medicine without consulting your doctor. If you experience severe side effects or an allergic reaction, stop the medicine and seek medical help immediately. For short-term treatments like travellers' diarrhoea, complete the full course as prescribed. For long-term use, your doctor will decide when it is safe to stop.
📅 Long-Term Use Effects
Long-term use of this medicine is generally well tolerated, especially in patients with hepatic encephalopathy who may need it for months or years. However, prolonged use of antibiotics can sometimes lead to bacterial resistance or a rare serious gut infection called Clostridioides difficile-associated diarrhoea. Regular monitoring of liver function and blood counts may be advised. If you notice any new or worsening symptoms, consult your doctor.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
A laxative that helps reduce ammonia levels in hepatic encephalopathy and is often used with rifaximin.
Evidence: Well-establishedMay help restore healthy gut bacteria, but evidence for specific benefits in these conditions is limited.
Evidence: LimitedAvoiding trigger foods and eating a balanced diet can help manage IBS-D and travellers' diarrhoea.
Evidence: Moderate💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no known interactions between this medicine and vaccines. However, if you are scheduled for a vaccine, inform your doctor that you are taking this medicine.
📦 Storage Guide
✅ DO
Store at room temperature (20-25°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
✅ DO
Keep out of reach of children
❌ DON'T
Do not use after expiry date
✈️ Traveling with This Medicine
When travelling with this medicine, carry it in its original packaging along with a copy of your prescription. Keep it in your carry-on luggage to avoid loss. Store it at room temperature and protect it from extreme heat or moisture. If you are crossing time zones, continue taking your doses at the same intervals as prescribed, but you may adjust the timing gradually. Check the customs regulations of your destination country regarding prescription medicines. Always carry enough medicine for your entire trip, plus a little extra in case of delays.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: For travellers' diarrhoea, improvement may be seen within 24 to 48 hours. For hepatic encephalopathy, it may take several days to weeks to see the full effect. For IBS-D, improvement may be noticed within a few days.
A: Yes, you can take this medicine with or without food. Taking it with food may help reduce stomach upset.
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 the dose.
A: This medicine is generally safe for long-term use in conditions like hepatic encephalopathy, but it should be taken under a doctor's supervision. Regular monitoring may be needed.
A: It is best to avoid alcohol while taking this medicine, especially if you have liver disease, as alcohol can worsen your condition.
🤔 Common Patient Concerns
🔄 Substitutes for rifameg 400mg tablet
View AllAlternative brands with exact same active ingredient:
-
rifacare 400mg tabletVitalys Pharmaceuticals Pvt Ltd ₹84.38 74.3% CHEAPER
-
davaindia rifaximin 400mg tabletDavaindia Generic Pharmacy ₹145.00 55.8% CHEAPER
-
Rifawar 400mg TabletBest Biotech ₹150.00 54.3% CHEAPER
-
rifaser 400mg tabletSerene Lifeworld Pvt Ltd ₹177.19 46% CHEAPER
-
rifapea 400mg tabletCassopeia Pharmaceuticals Pvt Ltd ₹177.19 46% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: Rifaximin is a general antibiotic for any infection.
Fact: Rifaximin is a non-absorbable antibiotic that works mainly in the gut. It is not effective for infections outside the intestines. - Myth: Rifaximin can be taken for any type of diarrhoea.
Fact: Rifaximin is not recommended for bloody diarrhoea or diarrhoea with fever, as these may be caused by invasive bacteria or parasites. - Myth: Rifaximin is safe to take without a prescription.
Fact: Rifaximin is a prescription medicine. It should only be taken under a doctor's supervision. - Myth: Rifaximin causes many side effects because it is an antibiotic.
Fact: Because rifaximin is poorly absorbed, it has fewer systemic side effects compared to many other antibiotics.
🔄 Alternative Options
Generic Alternatives
- Rifaximin 400 mg tablet
Brand Alternatives
- Rifagut 400 Tablet
- Xifaxan
- Rifacol