Generic Flagyl


Generic Flagyl is an antibiotic used for treating trichomonas vaginalis and giardia intestinalis

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Product Description

Generic Flagyl is a drug used for treating certain infections with sensible microorganisms (bacteria, vermin). The active substance is metronidazole.

Common use.

Flagyl is chemotherapeutically active against trichomonas vaginalis and giardia intestinalis. It has a bactericidal effect on: Bacteroides, Clostridia, Fusobacteria, Eubacteria, Anaerobe coccus, Gardenerella vaginalis.

Generic Flagyl is used to treat:

  1. infections caused by protozoa:
    1. trichomoniasis
    2. amebiasis
    3. amebic liver abscess
  2. infections caused by anaerobic bacteria, including:
    1. peritonitis
    2. abscesses of the abdomen and liver
    3. endometritis
    4. ovarian and fallopian tube abscesses
    5. postoperative complications
    6. pneumonia, pleural empyema, lung abscess
    7. meningitis, abscess of the brain
    8. skin infections
    9. bone infections
    10. sepsis
    11. endocarditis
  3. prevention of aggravation in surgical interventions:
    1. on the colon
    2. on appendectomy
    3. on gynecological operations
  4. Helicobacter pylori eradication with Helicobacter-associated gastric and duodenal ulcer, as part of complex therapy

As well, it acts synergetically with some antibiotics like tetracycline and erythromycin.

Administration and dosage.

You should always administer your medications in accordance with your prescription label. The dose may vary between 500mg and 1,5g of metronidazole per day for an adult. The pills should be swallowed with a small quantity of water. In certain situations your partner should be treated as well, regardless if he/she has clinical symptoms or not.

If the fever or any other symptom disappears it doesn’t mean that you have been cured. The eventual sensation of fatigue is not a result of the anti-infective treatment, but of the disease. Reducing or stopping your treatment will not have any effect upon your tiredness and will only postpone your healing.

Particular cases: the duration of treatment for giardiasis is 5 days, for amoebiasis and certain vaginitis- 7 days and for trichomoniasis is of 10 days.

Precautions and warnings.

You should be very careful when taking this drug if:

  1. you have severe neruological disorders, both cronic and/or in evolution
  2. you feel dizzy and you experience coordination troubles- it would be even recommended to stop taking these pills
  3. your brain is affected by a hepatic disease, such as hepatic encephalopathy
  4. you have antecedents with blood troubles, high doses and long lasting treatment- your doctor should periodically check the number of white cells in the blood
  5. you drive or use machineries

Pregnancy and breastfeeding: Taking any kind of medicine during these periods will be only done with doctor’s permission.

You should be aware that your urine may change its colour and become darker.


Do not take Generic Flagyl:

  1. if you are allergic to metronidazole or to any other component of Flagyl
  2. if you are allergic to any other drug belonging to imidazole group
  3. children under 6 years. They should not take pills as there is a high risk of accidents during the ingestion. Children should be prescribed drug forms appropriate for their age
  4. this drug should not be combined with alcohol, due to a high risk of side effects as heat waves, reddening of the face, nausea.

Side effects.

As all the drugs, Generic Flagyl administration may cause side effects:

  1. gastro-intestinal disorders: nausea, abdominal pain, diarrhea, tongue inflammation along with the sensation of a dry mouth, appetite loss, pancreatitis
  2. immune system disorders: rash, fever, urticaria, heat waves along with reddening of the face and only rarely pustulous eruption or anaphylactic shock
  3. nervos system disorders: confusions, halucinations, depressive mood
  4. sight troubles: diplopia (all the seen images are doubled) and myopia (short-sighted)
  5. diagnostical investigations: the urine will become brown-reddish

Drug interaction.

It is mandatory to inform your doctor about the medications you are taking, including those sold over the counter.

If you are under one of the following, you should tell your doctor at once:

  1. disulfiram
  2. lithium (used to treat bipolar affective disorder)
  3. phenobarbital or other drugs used for treating epilepsy
  4. anticoagulants as warfarin (drugs used to prevent blood clots)
  5. busulfan, cyclosporin or other drugs for cancer treatment

In the cases mentioned above your doctor will monitor your treatment closely.

Taking Generic Flagyl may have an incidence upon some laboratory tests: it might establish a false positive result for Nelson-Mayer test.

Missed dose.

If you forget to take the recommended Flagyl dose, do not take a double one in order to make up. Please talk to your health care provider and see what is to be done.


If you take more Flagyl generic than you should, a doctor should be consulted at once.