Metronidazole (Oral Route)

Name: Metronidazole (Oral Route)

US Brand Name

  1. Flagyl
  2. Flagyl ER

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following is not recommended. Your doctor may decide not to treat you with this medication, change some of the other medicines you take, or give you special instructions about the use of food, alcohol, or tobacco.

  • Ethanol

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For oral dosage forms (capsules or tablets):
    • For amebiasis infections:
      • Adults and teenagers—500 or 750 milligrams (mg) three times a day for 5 to 10 days.
      • Children—Dose is based on body weight and must be determined by your doctor. The dose is usually 35 to 50 milligrams (mg) per kilogram (kg) of body weight per day, divided and given in three doses, for 10 days.
    • For bacterial infections:
      • Adults and teenagers—Dose is based on body weight and must be determined by your doctor. The dose is usually 7.5 milligrams (mg) per kilogram (kg) of body weight every 6 hours for 7 to 10 days. Your doctor may increase your dose as needed. However, the dose is usually not more than 4000 mg per day.
      • Children—Use and dose must be determined by your doctor.
    • For trichomoniasis infections:
      • Adults and teenagers—The tablet can be given 3 different ways: as a single dose of 2 grams, as 1 gram two times a day for 1 day, or as 250 milligrams (mg) 3 times a day for 7 days. The capsule dose is 375 mg two times a day for 7 days.
      • Children—Use and dose must be determined by your doctor.
  • For oral dosage form (extended-release tablets):
    • For bacterial vaginosis:
      • Adults and teenagers—750 milligrams (mg) once a day for 7 days.
      • Children—Use and dose must be determined by your doctor.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.

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