Flagyl ER (Metronidazole)
Dosages
Flagyl ER 200 mg
| Quantity | Price per tablet | Total price | |
|---|---|---|---|
| 120 | $0.37 | $44.00 | |
| 180 | $0.31 | $56.00 | |
| 270 | $0.28 | $75.00 | |
| 360 | $0.26 | $93.00 |
Flagyl ER 400 mg
| Quantity | Price per tablet | Total price | |
|---|---|---|---|
| 90 | $0.54 | $49.00 | |
| 120 | $0.49 | $59.00 | |
| 180 | $0.44 | $79.00 | |
| 270 | $0.41 | $110.00 | |
| 360 | $0.39 | $139.00 |
Payment & Shipping
Your order is carefully packed and ships within 24 hours. Here is what a typical package looks like.
Sized like a regular personal letter (9.4x4.3x0.3 inches), with no indication of what is inside.
| Shipping Method | Estimated delivery |
|---|---|
| Express Free for orders over $300.00 | Estimated delivery to the U.S.: 4-7 days |
| Standard Free for orders over $200.00 | Estimated delivery to the U.S.: 14-21 days |
Discount Coupons
- Independence Day - July 4, 2026 10% JULY410
- Labor Day - September 7, 2026 7% LABOR07
- Thanksgiving - November 26, 2026 9% THANKS09
Brand Names
| Country | Brand Names |
|---|---|
 Argentina | Bexon Colpofilin Dazotron Epaq Etronil Flagyl Format Ginkan Gynotran Metral Metrocev Metrodermic Metrolocal Nalox Noritate Ovufem Padet Repligen Rozex Taremis Tolbin Tricofin Trimstat |
 Australia | Flagyl Metrogyl Metronide Metrozine Protostat Rozex Trichozole Zidoval |
 Belgium | Anaeromet Flagyl Pharmaflex Rosaced Rozex |
 Brazil | Ambrosil Amebil Astergyl Canderm Candifen Dalzolston Flagyl Flanizol Ginovagin Helmizol Metrizol Metrodax Metrogyl Metronib Metronide Metroniflex Metronil Metronin Metronix Metrotix Metroval Metrozol Minegyl Neo Metrodazol Odonid Rozex |
 Canada | Flagyl Florazole Metrocream Metrogel Metrolotion Neo-Metric NidaGel Noritate Novo-Nidazol Trikacide |
 Czechia | Deflamon Efloran Entizol Klion Medazol Rosalox Rozex |
 Denmark | Elyzol Flagyl Metrogel Rozex Zidoval |
 Finland | Elyzol Flagyl Rosazol Rozex Trikozol Zidoval |
 France | Collazole Elyzol Flagyl Grinazole Imizine Metrocol Metrogene Rosiced Rozacreme Rozagel Rozex |
 Germany | Arilin Clont Elyzol Flagyl Fossyol Infectoclont Metrocreme Metrogel Metrolotion Metronid-Puren Metronimerck Metronour Metront Metrosa Rathimed Rathimed N Rosiced Tricho Cordes Ulcolind Metro Vagi-Metro Vagimid |
 Greece | Acsacea Colpocin-T Dermaskin Elyzol Emedal Flagolin Flagyl Gnostol Metrazol Metrogyl Pedryl Periotret Robaz Rosiced Trichovagil Tricodazole Unitrim |
 Hungary | Klion Rozex Supplin |
 Italy | Deflamon Elyzol Flagyl Gineflavir Pernyzol Rosased Rosiced Rozex Vagilen Zidoval |
 Malaysia | Flagyl Fogyl Frotin Metronol Protogyl Ranigyl Rozex Setrozole |
 Mexico | Ameblin Amiyodazol Antral Biomona Biotazol Cryozol Dasmetrol Dasolin Dualizol Elyzol Epaq Fagizol Fartricon Flagenase Flagenol Flagepat Flaginazol Flagyl Flamin Flaxtec Fresenizol Fusanidazol Hemestal Juaflor Labitrix Lagylan Lamblit Lozad Medazol Medizol Meredazol Messeldazol Metosan Metricom Metrizol Metrobendizol Metrocream Metrogel Metronil Metroson Mibazol Milezzol Niacel Nidazolem Nidralon-V Nidrozol Nitromidager Ortrizol Otrozol Ovazol-V Planizol Proflag Promibasol Prozolin Retofar Samonil Selegil Servizol Solumidazol Stomffler Valpar Vanestrin-V Vatrix-S Vertisal |
 Netherlands | Anaeromet Elyzol Flagyl Metrogel Nidazea Rosiced Rozex |
 New Zealand | Flagyl Rozex Trichozole |
 Norway | Elyzol Flagyl Rozex Zidoval |
 Poland | Metrosept Rozex |
 Portugal | Dumozol Elyzol Flagyl Metroderme Norstene Rodermil Roseless Rosiced |
 Spain | Amotein Flagyl Rozex Tricowas B Zidoval |
 Sweden | Elyzol Flagyl Rozex Zidoval |
 Turkey | Flagyl Metrajil Metrazol Metrosel Nidazol Roza |
 United States | Flagyl Metizol Metric Metro Metrocream Metrogel Metrogel Vaginal Noritate Protostat Vandazole |
Description
The name of this medicine is Flagyl (Metronidazole). It belongs to a group of medicines called antibiotics/antiprotozoals. It helps treat certain bacterial and protozoal infections when prescribed by a clinician.
What Is Metronidazole?
It can be used to:
- treat serious infections caused by susceptible anaerobic bacteria (for example, intra-abdominal infections, skin/skin structure infections, gynecologic infections, bacteremia/septicemia, central nervous system infections, lower respiratory tract infections, and endocarditis);
- treat trichomoniasis and amebiasis (FDA-approved uses for FLAGYL tablets).
Some other uses may be prescribed by clinicians depending on local guidelines and individual factors (used off-label).
Metronidazole has also been formulated as a vaginal gel (0.75%) for the treatment of bacterial vaginosis. This is a different formulation/product from oral Flagyl tablets. Vaginal gel labeling includes once-daily dosing for 5 days for bacterial vaginosis.
Pharmacokinetics
Following oral administration, metronidazole is well absorbed, with peak plasma concentrations occurring between 1 and 2 hours after administration. The average elimination half-life in healthy subjects is about 8 hours. Approximately 20% of the dose is excreted unchanged in the urine. Metronidazole appears in cerebrospinal fluid and other tissues in concentrations similar to plasma.
How to Take Metronidazole
Always take the medicine exactly as your doctor has told you. It is important to finish a full course of treatment. The length of a course will depend on your needs and the illness being treated.
Check with your doctor or pharmacist if you are not sure.
- Swallow the tablets whole with a drink of water
- Do not crush or chew the tablets
- Take exactly as prescribed
Typical adult oral regimens from the FDA label (examples; your prescriber may individualize dosing):
| Indication | Patient Group | Dosage | Frequency / Duration |
|---|---|---|---|
| Trichomoniasis | Adults | 2 g total | Either as a single dose or as 1 g twice in the same day; or 250 mg |
| Trichomoniasis | Adults | 250 mg | Three times daily for 7 days |
| Amebiasis (acute intestinal) | Adults | 750 mg | Three times daily for 5 to 10 days |
| Amebic liver abscess | Adults | 500 mg or 750 mg | Three times daily for 5 to 10 days |
| Anaerobic bacterial infections | Adults | 7.5 mg/kg (about 500 mg for a 70-kg adult) | Every 6 hours; max 4 g/day (duration often 7 to 10 days) |
Pediatric use: safety and effectiveness in pediatric patients have not been established, except for the treatment of amebiasis (pediatric dosing is weight-based and should be prescribed by a clinician).
Your doctor will decide how much and how often to take, depending on the type and severity of infection.
People with Kidney Dialysis
Hemodialysis can remove a substantial amount of metronidazole from the bloodstream. If dosing cannot be separated from the dialysis session, your prescriber may consider a supplemental dose after hemodialysis depending on your clinical situation.
People with Liver Problems
Your doctor may tell you to use a lower dose or to use the medicine less often. A dose reduction is recommended in severe hepatic impairment.
If You Take More Metronidazole Than You Should
If you take more than you should, contact your doctor or the nearest hospital emergency department immediately. If possible, always take the box, this leaflet, and any tablets that are left over with you so the doctor knows what you have taken.
If You Forget to Take the Dose
If you miss a dose, take it as soon as you remember and continue as usual. If it is almost time for your next dose, skip the forgotten dose and continue as usual. Do not take a double dose to make up for a missed dose.
If you have any further questions about the use of this product, ask your doctor or pharmacist.
Important Safety Information
Do not take Metronidazole Tablets if you are allergic (hypersensitive) to metronidazole or other nitroimidazole derivatives. Signs of an allergic reaction include a rash, swallowing or breathing problems, and swelling of your lips, face, throat, or tongue.
Alcohol warning: Do not drink alcohol (and avoid products containing propylene glycol) while you are taking metronidazole and for at least 3 days after finishing your course. Drinking alcohol while using metronidazole may cause unpleasant side effects such as nausea, vomiting, stomach pain, flushing, headache, and cramping.
Pregnancy and Breastfeeding
Tell your doctor before using this medicine if you are pregnant, might become pregnant, or think you may be pregnant.
- Trichomoniasis: metronidazole tablets are contraindicated during the first trimester. If treatment is needed later in pregnancy and alternative treatment has been inadequate, the one-day (2 g) regimen should generally be avoided because it results in higher serum levels.
- Other indications: published studies include first-trimester exposures; discuss the risks and benefits with your clinician.
- Breastfeeding: metronidazole is present in human milk. Because of the potential for tumorigenicity seen in animal studies, a decision should be made whether to discontinue nursing or discontinue the drug. Alternatively, a nursing mother may pump and discard milk during therapy and for 24 hours after therapy ends and feed stored human milk or formula.
Ask your doctor or pharmacist for advice before taking any medicine.
Driving and Using Machines
While taking metronidazole, you may feel sleepy, dizzy, confused, see or hear things that are not there (hallucinations), have fits (convulsions), or temporary eyesight problems (such as blurred or double vision). If this happens, do not drive or use any machinery or tools.
Your doctor may wish to carry out some tests if you have been using this medicine for more than 10 days.
Possible Side Effects
Metronidazole is generally well tolerated. Common side effects can include nausea, a metallic taste, and gastrointestinal upset. Serious nervous system effects (including seizures, encephalopathy, optic or peripheral neuropathy) have been reported, particularly with prolonged use; stop the medicine and seek medical advice if you develop neurologic symptoms such as numbness, tingling, weakness, vision changes, or severe dizziness.
Stop taking metronidazole and see a doctor or go to a hospital straight away if you get swelling of the hands, feet, ankles, face, lips or throat which may cause difficulty in swallowing or breathing. You could also notice an itchy, lumpy rash (hives) or nettle rash (urticaria). This may mean you are having an allergic reaction.
Talk to your doctor straight away if you notice: yellowing of the skin/eyes (jaundice), unusual bruising/bleeding or severe tiredness (possible blood effects), or severe stomach pain that may reach through to your back (pancreatitis).
Long-Term Use
Metronidazole has shown tumorigenicity in mice and rats; unnecessary use should be avoided and therapy should be reserved for appropriate indications.
Interactions
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines. This includes medicines obtained without a prescription, including herbal medicines.
- Disulfiram: do not use metronidazole if you have taken disulfiram within the last 2 weeks.
- Alcohol / propylene glycol: avoid during therapy and for at least 3 days after the last dose.
- Warfarin and other coumarin anticoagulants: metronidazole may increase bleeding risk; monitoring/adjustment may be needed.
- Lithium (may increase lithium toxicity; monitoring may be needed).
- Busulfan (may increase busulfan exposure/toxicity).
- Phenytoin, phenobarbital (may alter metronidazole levels and effects).
- Ciclosporin / tacrolimus (levels may increase; monitoring may be needed).
Storage and Stability: Store below 25°C / 77°F and protect from light.
