Flagyl 400 mg Tablets are a commonly used antibiotic designed to treat a wide range of bacterial and parasitic infections. The unbranded version contains the same active ingredient and works just as effectively as the branded medication.
Introduction
Flagyl 400 mg is an antibiotic used worldwide to treat infections caused by bacteria and parasites. It is especially useful for infections of the stomach, intestines, vagina, gums, skin, and certain sexually transmitted infections. Doctors commonly prescribe the 400 mg strength because it provides effective treatment for many types of infections.
What Is Flagyl 400 mg Used For?
Flagyl 400 mg is used to treat a variety of infections, including:
- Bacterial infections of the stomach and intestines
- Amebiasis (intestinal parasitic infection)
- Giardiasis (parasite causing diarrhea)
- Trichomoniasis (sexually transmitted infection)
- Bacterial vaginosis
- Pelvic infections
- Dental infections
- Skin and soft-tissue infections
- Infections after surgery
Doctors may also prescribe it to prevent infections before certain surgical procedures.
Ingredients in Flagyl 400 mg
Active Ingredient: Metronidazole 400 mg
How Flagyl Works
Flagyl contains metronidazole, an antimicrobial agent that kills bacteria and parasites by interfering with their DNA. Once inside the infection-causing organism, it blocks the growth and reproduction of harmful microbes.
This stops the infection from spreading and allows the body to heal.
Flagyl works well in areas where oxygen levels are low, making it especially effective for:
Gut infections, Vaginal infections, Dental infections and Deep tissue infections
Flagyl 400 mg Dosage Guide
Important: Dosages can vary depending on the infection, age, weight, and medical condition. Always follow the exact instructions given by a doctor.
Below are general guidelines, not personalized medical advice.
Typical Adult Dosage
- Usually taken 2 to 3 times a day
- Tablets should be swallowed whole with water
- Best taken after food to reduce stomach upset
- Treatment typically lasts 5–10 days, depending on the infection
For Parasite Infections
Often taken twice or three times daily for several days
For Vaginal or Pelvic Infections
Commonly taken twice daily for 7 days
For Dental Infections
Usually taken three times a day for a short course
For STIs like Trichomoniasis
May be taken as a single dose or a short course
Side Effects of Flagyl 400 mg
Like all medications, Flagyl can cause side effects. Most are mild and go away after treatment.
Common Side Effects
- Nausea
- Metallic taste in the mouth
- Loss of appetite
- Vomiting
- Diarrhea
- Headache
- Dizziness
Frequently Asked Questions About Flagyl 400 mg
1. Can I drink alcohol while taking Flagyl?
No. Drinking alcohol can cause severe reactions, including nausea, vomiting, flushing, and rapid heartbeat. Avoid alcohol during treatment and for 48 hours after finishing the medication.
2. How long does Flagyl take to work?
Most people start feeling better within 48–72 hours, but the full course must be completed.
3. Can I take Flagyl on an empty stomach?
It’s better taken after food to reduce stomach discomfort.
4. Is Flagyl safe in pregnancy?
It may be used in certain stages of pregnancy if a doctor recommends it. Never take it without medical advice.
5. Can Flagyl be used for yeast infections?
No. Flagyl treats bacterial and parasitic infections, not fungal infections like yeast (thrush).
6. Is the unbranded version as good as the branded version?
Yes. Unbranded Flagyl has the same active ingredient and works equally well.
Conclusion
Flagyl 400 mg is a powerful and reliable antibiotic used to treat many bacterial and parasitic infections. It works by targeting and destroying harmful microbes in the body.
