Introduction
FLAGYL 500 mg Pessaries are a type of vaginal medication used to treat certain infections caused by bacteria and parasites. They are commonly prescribed for vaginal infections such as bacterial vaginosis and trichomoniasis. Because the medicine is placed directly into the vagina, it works right where the infection is, leading to fast and effective relief.
This article explains what FLAGYL pessaries are, how they work, how to use them, their ingredients, possible side effects, and answers to frequently asked questions—all in simple, easy-to-understand language.
What are FLAGYL 500 mg Pessaries?
FLAGYL is a brand name for metronidazole, an antibiotic and antiprotozoal medicine. The 500 mg pessary is a solid, bullet-shaped medication designed to be inserted into the vagina, where it slowly dissolves and treats the infection directly.
These pessaries are often prescribed by doctors when an infection needs targeted treatment inside the vagina rather than an oral antibiotic.
Uses of FLAGYL 500 mg Pessaries
FLAGYL 500 mg Pessaries are commonly used to treat:
1. Bacterial Vaginosis (BV)
A condition where harmful bacteria outgrow the normal healthy bacteria in the vagina, causing discharge, odor, and discomfort.
2. Trichomoniasis
This is a sexually transmitted infection caused by a parasite (Trichomonas vaginalis). Symptoms may include itching, discharge, or pain during urination.
3. Mixed Vaginal Infections
Sometimes infections are caused by both bacteria and parasites. FLAGYL is effective in treating these combinations.
4. Vaginal inflammation caused by sensitive bacteria
In cases where overgrowth of certain bacteria causes irritation or discomfort.
Ingredients in FLAGYL 500 mg Pessaries
Active Ingredient: Metronidazole 500 mg
How FLAGYL Pessaries Work
FLAGYL contains metronidazole, which works by:
- Killing harmful bacteria
- Destroying parasites responsible for infections like trichomoniasis
- Stopping the infection from spreading
- Restoring healthy balance in the vagina
Because the pessary is inserted directly into the vagina, it provides local treatment, meaning the medicine acts right where the infection is happening. This can reduce symptoms like discharge, odor, irritation, and itching.
Dosage and How to Use FLAGYL 500 mg Pessaries
Typical Dosage
- One 500 mg pessary is inserted deep into the vagina once daily, usually at bedtime.
- Treatment usually lasts for 7–10 days, depending on the condition.
How to Insert a Pessary
- Wash your hands thoroughly.
- Remove the pessary from its packaging.
- Lie on your back with your knees bent or stand with one leg raised.
- Gently insert the pessary into the vagina as far as comfortable.
- Wash your hands again after insertion.
- It’s best to use the pessary at night to prevent leakage.
Helpful Tips
- Wearing a sanitary pad may help with minor leakage as the pessary dissolves.
- Do not use tampons during treatment.
- Avoid sexual activity until the infection clears.
Possible Side Effects of FLAGYL 500 mg Pessaries
Most people use FLAGYL without serious issues, but some may experience side effects.
- Vaginal irritation
- Mild burning or itching
- Unusual taste in the mouth (rare, but possible)
- Slight discharge as the pessary dissolves
- Headache
- Nausea
- Dizziness
- Abdominal cramps
Frequently Asked Questions (FAQs)
1. Can I use FLAGYL pessaries during my period?
It’s usually recommended to avoid using them during heavy menstruation because the medicine may not work as well. Ask your doctor for guidance.
2. Can I have sex while using FLAGYL pessaries?
It’s best to avoid sexual intercourse until the treatment is completed and symptoms have cleared.
3. Can FLAGYL pessaries be used during pregnancy?
Only if your doctor says it’s safe. Always seek medical advice before using any medication during pregnancy.
4. Will FLAGYL pessaries affect condoms?
Yes. The ingredients may weaken latex condoms, making them less effective.
5. How long does it take for symptoms to improve?
Most people feel better within 2–3 days, but you should finish the full treatment course to prevent the infection from returning.
6. Can both partners need treatment?
If the infection is trichomoniasis, both partners usually need treatment to prevent reinfection. Consult your doctor.
Conclusion
FLAGYL 500 mg Pessaries are an effective treatment for vaginal infections caused by bacteria or parasites. They work directly at the site of infection, offering fast relief from symptoms like discharge, odor, and irritation. When used correctly, they can restore vaginal health quickly and safely.
Remember to follow the dosage instructions, complete the full treatment, and consult a healthcare professional if side effects occur or if symptoms do not improve.



