Flagyl 400mg Tablets: Uses, Safety and Doc History
Quick summary Flagyl 400mg tablets contain metronidazole, an antibiotic used for certain bacterial and parasitic infections. This guide explains common uses, safety points, side effects, interactions and what to check in the official leaflet...
This content is for educational purposes only and does not replace medical advice, diagnosis or treatment from a qualified healthcare professional.
Quick summary
Flagyl 400mg tablets contain metronidazole, an antibiotic used for certain bacterial and parasitic infections. This guide explains common uses, safety points, side effects, interactions and what to check in the official leaflet or with a healthcare professional.
Medical disclaimer
This article is for general information only and does not replace advice from a doctor, pharmacist or the product leaflet. Do not use it to self-diagnose, and do not change any prescribed treatment without professional guidance.
What are Flagyl 400mg tablets?
Flagyl 400mg tablets contain the active ingredient metronidazole. It is used for certain infections caused by anaerobic bacteria and some parasites.
Metronidazole works by disrupting the DNA synthesis of susceptible organisms, which helps stop them from multiplying and leads to their death.
What are Flagyl 400mg tablets used for?
According to the original content, Flagyl 400mg tablets may be used for several types of infection, including:
- Gastrointestinal infections, including Clostridium difficile colitis.
- Dental infections, including gum-related infections.
- Skin and soft tissue infections, including infected wounds.
- Gynecological infections, including pelvic inflammatory disease.
It may also be used in some surgical settings to help reduce the risk of infection.
How is Flagyl 400mg usually taken?
The exact dose and duration depend on the infection being treated, the person’s age, and the severity of the condition. The original content notes that treatment length can vary.
Examples mentioned in the source include:
- Most infections: 400mg by mouth every 8 hours for 7 to 10 days.
- Dental infections: 400mg twice daily for 3 days.
- Surgical prophylaxis: 400mg 1 hour before surgery, with another dose within 24 hours if needed.
Always follow the instructions given by the prescriber and check the patient leaflet for the exact regimen.
What side effects can Flagyl 400mg tablets cause?
Flagyl 400mg tablets are generally tolerated by many people, but side effects can occur.
Common side effects listed in the original content include:
- Nausea and vomiting
- Diarrhea
- Abdominal pain
- Headache and dizziness
Serious side effects mentioned in the source include:
- Liver toxicity, which may show as jaundice or dark urine
- Severe skin reactions, including rash and blistering
- Neurological effects, such as seizures or peripheral neuropathy
If severe or unusual symptoms occur, seek medical help promptly.
What precautions should be considered?
Before using Flagyl 400mg tablets, the original content highlights several precautions:
- Allergy: Tell a healthcare professional if you have a known allergy to metronidazole or related medicines.
- Liver disease: Extra caution may be needed if you have liver impairment.
- Alcohol: Avoid alcohol while taking Flagyl, as it can cause unpleasant reactions such as nausea, vomiting and flushing.
It is also important to share your full medical history and medication list with a healthcare professional.
What drug interactions are mentioned?
Flagyl 400mg tablets can interact with other medicines. The original content specifically mentions:
- Anticoagulants: Metronidazole may increase the effect of blood thinners and raise bleeding risk.
- Lithium: Combined use may increase lithium levels and the risk of toxicity.
- Certain antifungals: Some medicines, such as ketoconazole, may interact.
Because interactions can vary, a pharmacist or doctor should review all prescription medicines, over-the-counter products and supplements.
What about pregnancy, breastfeeding and older adults?
The source notes that special care may be needed in certain groups:
- Pregnancy: Use should be limited to situations where it is clearly needed, with medical guidance.
- Breastfeeding: Metronidazole can pass into breast milk, so risks and benefits should be discussed with a healthcare professional.
- Older adults: Geriatric patients may be more sensitive to the effects of metronidazole.
Flagyl 400mg at a glance
| Topic | Key point |
|---|---|
| Active ingredient | Metronidazole |
| Main use | Certain bacterial and parasitic infections |
| Common side effects | Nausea, vomiting, diarrhea, abdominal pain, headache, dizziness |
| Important precaution | Avoid alcohol while taking it |
Frequently asked questions
▸ What is Flagyl 400 mg used for?
Flagyl 400mg is used for infections caused by anaerobic bacteria and certain parasites. The original content mentions gastrointestinal, dental, skin and soft tissue, and gynecological infections.
▸ How many days is Flagyl 400mg taken for?
The duration depends on the condition being treated. The source mentions 7 to 10 days for many infections and 3 days for some dental infections.
▸ Are Flagyl tablets strong?
Flagyl is described in the source as a powerful antibiotic because it is effective against certain bacterial and parasitic infections, especially anaerobic bacteria.
▸ What is Flagyl most commonly used for?
The original content says it is commonly used for bacterial vaginosis and Clostridium difficile infections, as well as some dental and gastrointestinal infections.
▸ Can I drink alcohol with Flagyl 400mg?
The source advises avoiding alcohol while taking Flagyl because it can cause severe reactions such as nausea, vomiting and flushing.
Safety reminder
If you have severe side effects, signs of an allergic reaction, or symptoms that worry you, seek urgent medical advice. For any medicine-specific questions, check the official leaflet or speak with a pharmacist or doctor.
Medical disclaimer
This content is for educational purposes only. It should not be used as a substitute for professional medical advice, diagnosis or treatment. Always ask a doctor, pharmacist or qualified healthcare professional before starting, stopping or changing any medicine.
Sources and verification
The following sources or official references are listed to support verification of the medicine information discussed in this article.
- NHS: Metronidazole
- MedlinePlus: Metronidazole
- Electronic Medicines Compendium: Metronidazole tablets
- Mayo Clinic: Metronidazole (oral route)
To improve this article with specific references, add a custom field named _aio_sources in the post editor and write one source per line using: Source title|Source URL.
Medicine information can change and may vary depending on country, product formulation, patient history and professional guidance. Always check official medicine information and ask a healthcare professional for personal medical questions.