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Flagyl 400 Tablet

Tablet
Rs.23.90for 1 strip(s) (15 tablets each)
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Composition FOR Flagyl 400mg Tablet

Metronidazole(400mg)

food interaction for Flagyl Tablet

alcohol interaction for Flagyl Tablet

pregnancy interaction for Flagyl Tablet

lactation interaction for Flagyl Tablet

food
alcohol
pregnancy
lactation
Flagyl 400 Tablet should be taken with or after food.
None
CAUTION
Consumption of alcohol with Flagyl 400 Tablet may cause a disulfiram-like reaction, leading to symptoms such as flushing, increased heart rate, low blood pressure, nausea, lightheadedness, and severe headache.
UNSAFE
The safety of Flagyl 400 Tablet during pregnancy has not been established. There are no adequate and well-controlled studies in pregnant women, and animal data on reproductive toxicity are insufficient. Your doctor will weigh the benefits and any potential risks before prescribing.
CONSULT YOUR DOCTOR
Flagyl 400 Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.
If a single dose of Flagyl 400 Tablet is used, it is recommended to hold breastfeeding for 12-24 hours to allow the removal of the drug.
CONSULT YOUR DOCTOR

SALT INFORMATION FOR Flagyl 400mg Tablet

Metronidazole(400mg)

Flagyl tablet uses

{med_name} is used in the treatment of bacterial infections and parasitic infections.

How flagyl tablet works

Flagyl 400 Tablet contains metronidazole, an antibiotic and antiprotozoal medicine that works by entering the bacterial or parasitic cells and damaging their DNA. This prevents the microorganisms from growing and reproducing, ultimately leading to their death and clearing the infection.

Common side effects of flagyl tablet

Headache, Dryness in mouth, Nausea, Metallic taste

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Expert advice FOR Flagyl Tablet

  • Take Metronidazole with a full meal or a glass of milk to reduce the risk of gastrointestinal side effects.
  • Do not drink alcohol during or for 2-3 days after treatment with this medicine. You may develop nausea, vomiting, flushing, and headache (disulfiram-like reaction).
  • Your urine may appear darker or reddish-brown during treatment. This is a known, harmless effect of Metronidazole and does not indicate kidney damage or bleeding.
  • A temporary metallic or bitter taste in the mouth may occur during therapy. This is a common side effect and usually resolves after completing the treatment.
  • Inform your doctor if you have liver disease. Your dose may need to be adjusted in severe liver disease.

Frequently asked questions FOR Flagyl 400mg Tablet

Metronidazole

Q. What is Flagyl 400 Tablet and what is it used for?
Flagyl 400 Tablet is an antibiotic used to treat infections caused by certain bacteria and parasites. It is commonly prescribed for infections of the stomach and intestines (such as amoebiasis and giardiasis), vaginal infections like trichomoniasis and bacterial vaginosis, dental and gum infections, and other infections caused by bacteria that grow without oxygen. It works by killing the germs responsible for the infection.
Q. Is Flagyl 400 Tablet safe for patients with liver conditions?
The liver processes Flagyl 400 Tablet, so people with liver problems need to take it carefully. In patients with severe liver disease, the medicine may stay in the body longer, which can increase the risk of side effects. In such cases, your doctor may reduce the dose and monitor you more closely. Anyone with liver disease should inform their doctor before starting treatment.
Q. Can Flagyl 400 Tablet lead to antibiotic resistance?
Yes, like all antibiotics, Flagyl 400 Tablet can contribute to antibiotic resistance if used improperly. Taking it when it is not needed, using it for the wrong condition, or not completing the full prescribed course can allow bacteria to survive and become harder to treat in the future. It should always be taken after consulting your doctor.
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Q. How should Flagyl 400 Tablet be consumed relative to meals?
Flagyl 400 Tablet can be taken with or after food. Taking it with food may help reduce stomach upset or nausea. The tablets should be swallowed with water, and you should follow your doctor’s instructions regarding the dose and duration of treatment.
Q. How long does Flagyl 400 Tablet take to work?
Flagyl 400 Tablet usually begins working within about one hour after you take it, as the medicine is absorbed into the bloodstream. However, you may not feel better immediately. In most infections, noticeable improvement in symptoms may take 2–3 days. It is important to continue taking the medicine as prescribed. If your symptoms do not improve or worsen, you should consult your doctor.
Q. Can I drink alcohol while using Flagyl 400 Tablet?
No, you should avoid alcohol while taking Flagyl 400 Tablet and for at least 3 days after completing the course. Drinking alcohol during this time can cause an unpleasant reaction known as a “disulfiram-like reaction.” Symptoms may include stomach cramps, nausea, vomiting, headache, flushing (redness of the face), and a feeling of discomfort.
Q. Can using Flagyl 400 Tablet cause a metallic taste?
Yes, a temporary metallic taste in the mouth is a known side effect. This is usually harmless and resolves after treatment is completed. Staying well hydrated, brushing your teeth after meals, and chewing sugar-free gum or mints may help reduce this sensation.
Q. Can I stop taking Flagyl 400 Tablet when I feel better?
No, you should complete the full prescribed course, even if you start feeling better. Symptoms may improve before the infection is fully cleared. Stopping the medicine too early can cause the infection to return and may make it harder to treat. Always consult your doctor before stopping the medicine.
Q. What if there is no improvement after using Flagyl 400 Tablet?
If you do not feel better after completing the full course, or if your symptoms worsen during treatment, inform your doctor. Further evaluation or a change in treatment may be needed.

Content on this page was last updated on 14 April, 2026, by Dr. Rajeev Sharma (MBA, MBBS)