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Flagyl (Metronidazole)

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What is Generic?

What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Flagyl is a potent antibiotic and antiprotozoal medication that is used to treat various infections caused by bacteria and parasites. It is particularly effective against anaerobic bacteria, which thrive in areas with little oxygen. Flagyl is commonly prescribed to treat infections of the stomach, vagina, liver, joints, and respiratory tract. It also finds its application in treating skin conditions, abscesses, and wounds that are infected. Metronidazole works diligently to inhibit the growth and survival of bacteria and parasites, helping the body to combat the infection effectively.

Before you buy Flagyl or Flagyl generic, it is crucial that you talk to your healthcare provider about its potential side effects and affordability.

Buy Flagyl (Metronidazole) online from online Canadian Pharmacy |


Flagyl antibiotic should be taken as directed by your healthcare professional. It is generally advised to be taken orally with a full glass of water. It can be consumed with or without food but taking it with a meal can help in reducing stomach upset. Ensure that you follow the dosage instructions carefully and complete the full course of the medication, even if symptoms improve before the medication is finished, to ensure the infection is completely cleared from the system.


The active ingredient in Flagyl is Metronidazole.


Ensure that you communicate your full medical history to your healthcare provider, including any allergies or other medications and supplements you are currently taking.

Avoid alcohol consumption during this medication and for at least 48 hours after completing it, as it may result in a disulfiram-like reaction (severe vomiting, headache, and other symptoms).

It is essential to inform your doctor if you have liver disease, kidney disease, a stomach disorder, or a blood cell disorder like anemia or leukopenia.


Flagyl may interact with other medications, which can affect how it works or increase the risk of serious side effects. Some medications that may interact with Flagyl include anticoagulants (e.g., warfarin), lithium, disulfiram, and cimetidine.

Side Effects

Some common side effects of Flagyl include:

  • Nausea
  • Vomiting
  • Diarrhea
  • Stomach pain
  • Loss of appetite
  • Dry mouth
  • Sharp, metallic taste

Remember, these are not exhaustive lists, and it's important to consult with a healthcare professional for personalized advice and guidance. If you prefer, you may contact the U.S. Food and Drug Administration (FDA) directly. Visit or call 1-800-FDA-1088

Frequently Asked Questions about Flagyl

How long does Flagyl stay in your system?

Flagyl (Metronidazole) is usually eliminated from the body within 48 to 72 hours after the last dose. This can vary based on individual factors like metabolism, hydration, and overall health.

How long does it take Flagyl to work?

The effectiveness of Flagyl can be noticed within a few hours to a couple of days after starting the medication. However, the complete resolution of symptoms might take up to the full course of the medication.

Can Flagyl cause a yeast infection?

Yes, Flagyl can alter the normal flora of the vagina, which may lead to a yeast infection in some women. It is essential to discuss any symptoms with your healthcare provider.

Is Flagyl safe during pregnancy?

Flagyl should be used during pregnancy only if clearly needed and as directed by a healthcare professional. It is essential to discuss the risks and benefits with your healthcare provider.

Does Flagyl make you tired?

Yes, Flagyl can cause tiredness or fatigue in some individuals. Ensure that you do not undertake tasks that require alertness, such as driving, if you experience this side effect.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.