Prescription onlyLower-cost generic availableClass: Infection

Flagyl

(metronidazole)

Prescription onlyLower-cost generic availableClass: Infection
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Treats and prevents bacterial infections.

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Our bottom line

Flagyl (metronidazole) is very good at treating certain bacterial infections, but you can't have any alcohol while on it since it'll make you throw up a lot.

Prices and discounts
Lowest price for 14 500mg tablets
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$9.66
  • Price before coupon
    $17.89
  • Lowest price with coupon
    $9.66
  • Savings
    46%

Upsides

  • Flagyl (metronidazole) is good at killing a variety of bacteria.
  • Unlike many other antibiotics, Flagyl (metronidazole) is less likely to make bacteria resistant to it.
  • Most forms are available as a generic, so it's relatively cheap.
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Downsides

  • You can't drink alcohol while on Flagyl (metronidazole), and for at least 3 days after you finish it.
  • Side effects can include nausea, headache, stomach upset, and a metallic taste in your mouth.
  • If you're taking Flagyl (metronidazole) for a long time, there's a risk of more side effects, such as nerve damage.
  • If you're on blood thinners, let your doctor know. Flagyl (metronidazole) can interact with your medicines and make you more likely to bleed.
Prices and discounts
Lowest price for 14 500mg tablets
Determining your location...
$9.66
  • Price before coupon
    $17.89
  • Lowest price with coupon
    $9.66
  • Savings
    46%
How it works

Flagyl (metronidazole) is an antibiotic that kills bacteria by interacting with their DNA and preventing proteins from being made.

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Used for
Dosage forms
  • Pill
  • Extended-release pill
  • Injection

What to expect when you take Flagyl (metronidazole) for Infection

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Side effect rates for Flagyl (metronidazole)

  • Headache
  • Nausea
  • Metallic taste
  • Genital itching
  • Diarrhea
  • Stomach problems
  • Dizziness
  • Stuffy nose
  • Abnormal urine
  • Menstrual cramps

Risks and Warnings for Flagyl (metronidazole)

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    • Higher risk if:
    • Taking high doses of Flagyl (metronidazole)
    • Taking Flagyl (metronidazole) for a long time

    Although rare, some people taking Flagyl (metronidazole) can have seizures or problems with normal brain function. Symptoms include not being able to walk straight, dizziness, not being able to speak, shaking, and uncontrolled movements of your body. These are very serious and you should talk to your doctor or go to the emergency room right away if you experience anything like this while taking Flagyl (metronidazole).

Means that some groups have a high risk of experiencing this side effect

Common concerns from people taking Flagyl (metronidazole)

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Pregnancy
Interactions
  • Alcohol interacts with Flagyl (metronidazole) to cause a serious reaction in people that includes stomach upset, throwing up, feeling sick, or turning red. Avoid alcohol while you're taking Flagyl (metronidazole), and for 3 days after you're done taking it.
Alcohol
  • Don't drink any alcohol (don't even use mouthwash with alcohol in it) while taking Flagyl (metronidazole) and for at least 3 days after using it, because it can cause a serious reaction in your stomach and make you throw up.
  • You can't drink alcohol while on Flagyl (metronidazole), and for at least 3 days after you finish it.
Food
  • If you're on blood thinners, let your doctor know. Flagyl (metronidazole) can interact with your medicines and make you more likely to bleed.