Flagyl 400 is a highly effective prescription medication containing Metronidazole, a nitroimidazole antibiotic and antiprotozoal. It is widely used to treat a variety of infections caused by certain bacteria and parasites, particularly those that thrive in anaerobic (oxygen-free) environments. Produced by Synovia Pharma PLC (the local partner of Sanofi), it is a cornerstone of infectious disease treatment in Bangladesh. Here is a clear, updated guide for 2026.
What is Flagyl 400 Used For?
Flagyl 400 mg contains Metronidazole 400 mg and is prescribed mainly for:
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Amoebic & Parasitic Infections: Treatment of amoebiasis, giardiasis, and trichomoniasis.
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Bacterial Infections: Effective against anaerobic infections in the gastrointestinal tract, liver, and respiratory system.
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Vaginal Health: Treatment of bacterial vaginosis (nonspecific vaginitis).
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Dental Health: Relief from acute dental infections and ulcerative gingivitis (gum disease).
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H. pylori Eradication: Used in combination therapy for peptic ulcers.
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Surgical Prophylaxis: Prevention of post-operative infections following abdominal or gynecological surgeries.
Key Reminder: Flagyl is an antibiotic and will not work for viral infections like the common cold or flu. For detailed clinical data on Metronidazole’s bactericidal action, you can review its profile on DrugBank.
Dosage
The dosage and duration depend on the type of infection being treated:
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Standard Adult Dose: Usually 400 mg three times daily (every 8 hours) for 5 to 7 days.
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Amoebiasis: Higher doses may be required (e.g., 800 mg three times daily).
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Administration: It is highly recommended to take Flagyl with or after food to reduce stomach upset. Tablets should be swallowed whole with water.
Common Side Effects
While effective, Flagyl is known for several distinct but usually mild side effects:
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Metallic Taste: A sharp, unpleasant metallic taste in the mouth.
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Nausea & Vomiting: Mild to moderate gastrointestinal discomfort.
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Dark Urine: Urine may turn a darker reddish-brown color (harmless).
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Headache & Dizziness: Temporary lightheadedness during treatment.
Important Warnings & Precautions
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Alcohol Prohibition: Strictly avoid alcohol during treatment and for at least 48–72 hours after the last dose. Mixing Flagyl with alcohol causes a “disulfiram-like reaction” (severe vomiting, racing heart, and headache).
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Liver Disease: Dose adjustment is necessary for patients with severe liver impairment.
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Neurotoxicity: Use with caution in patients with active central nervous system diseases.
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Blood Disorders: Patients with a history of blood dyscrasias (blood count issues) require monitoring.
Flagyl 400 vs. Ciprocin 500 : Key Differences
While both Flagyl 400 and Ciprocin 500 are potent antimicrobial medications, they target very different types of infections. Using the wrong one can be ineffective and contribute to antibiotic resistance.
| Feature | Flagyl 400 | Ciprocin 500 |
| Generic Name | Metronidazole (400mg) | Ciprofloxacin (500mg) |
| Drug Class | Nitroimidazole (Antiprotozoal/Antibiotic) | Fluoroquinolone (Broad-spectrum Antibiotic) |
| Targets | Anaerobic bacteria & Parasites | Aerobic bacteria (Gram+ and Gram-) |
| Primary Use | Diarrhea, Dental infections, Giardia | UTIs, Typhoid, Respiratory infections |
| Alcohol Warning | Strictly Prohibited | No major interaction |
| Common Side Effect | Metallic taste in mouth | Joint/Tendon pain, Acidity |
Flagyl Tablet Price in Bangladesh (February 2026 Update)
The following table provides the updated pricing for Flagyl variants available in Bangladesh.
| Product Name | Strength | Unit Price (BDT) | Strip Price (10 Tablets) |
| Flagyl 400 | 400 mg | ৳1.70 | ৳17.00 |
| Flagyl 200 | 200 mg | ৳1.00 | ৳10.00 |
| Flagyl Suspension | 200 mg/5 ml | ৳35.00 (60ml) | ৳35.00 (Bottle) |
| Flagyl IV | 500 mg/100 ml | ৳85.00 | ৳85.00 (Bag) |
Flagyl 400 Alternative Brands & Prices
If you are looking for an alternative to Flagyl 400, below is a comparison of top brands in Bangladesh as of 2026. For more info, visit the DGDA Bangladesh portal.
| Brand Name | Company Name | Price per Unit (BDT) |
| Amodis 400 | Square Pharmaceuticals | ৳1.70 |
| Filmet 400 | Beximco Pharmaceuticals | ৳1.70 |
| Metro 400 | Incepta Pharmaceuticals | ৳1.70 |
| Metryl 400 | Opsonin Pharma | ৳1.70 |
| Metsina 400 | Ibn Sina Pharmaceuticals | ৳1.60 |
| Dirozyl 400 | The ACME Laboratories | ৳1.70 |
| Nidazyl 400 | Orion Pharma Ltd. | ৳1.50 |
| Amotrex 400 | ACI Limited | ৳1.70 |
| Biozyl 400 | Biopharma Ltd. | ৳1.70 |
| Flamyd 400 | Eskayef (SK+F) | ৳1.70 |
Frequently Asked Questions (FAQ) About Flagyl 400
1. What is the Flagyl 400 mg price in Bangladesh?
As of February 2026, the retail price for Flagyl 400 is ৳1.70 per tablet. A strip of 10 tablets costs ৳17.00.
2. What is Flagyl 400 used for?
It is used to treat infections caused by bacteria and parasites, including diarrhea (amoebic dysentery), giardiasis, tooth infections, and certain vaginal infections.
3. What are the common side effects of Flagyl 400?
The most common side effects are a metallic taste in the mouth, nausea, loss of appetite, and headache.
4. Is Flagyl 400 safe during pregnancy?
It is generally avoided during the first trimester. It should only be used in the second and third trimesters if clearly prescribed by a doctor.
5. Can I drink alcohol while taking Flagyl 400?
No. Drinking alcohol during or for 3 days after treatment causes severe illness (flushing, vomiting, and heart palpitations).
6. How many Flagyl tablets can I take in a day?
The standard dose for adults is one 400 mg tablet 3 times a day. Do not take more than what is prescribed by your doctor.
7. Does Flagyl 400 treat the common cold?
No. Flagyl treats bacterial and parasitic infections. It has no effect on viral infections like the cold or flu.
8. Why does my urine look dark while taking Flagyl?
Metronidazole can cause your urine to darken. This is a harmless side effect and will disappear once you finish the course.
9. Are there any alternatives to Flagyl 400 in Bangladesh?
Yes, common alternatives include Amodis (Square), Filmet (Beximco), and Metro (Incepta), all priced at approximately ৳1.70.
Disclaimer: This is educational information only (updated February 2026). Not a substitute for professional medical advice. Always consult a qualified physician before starting/stopping any medication.
