Metronidazole 500mg Tablet – Generic Flagyl
Actual product appearance may differ slightly.
Metronidazole is used for:
Treating infections caused by certain bacteria and preventing
infection before, during, and after certain surgeries. It may also be used for
other conditions as determined by your doctor.
Metronidazole is an antibacterial agent. It is thought to
work by entering the bacterial cell, acting on some components of the cell, and
destroying the bacteria.
Do NOT use Metronidazole if:
- you are allergic
to any ingredient in Metronidazole or to other nitroimidazoles (eg,
- you are in the first 3 months of
- you are taking busulfan, an ergot
alkaloid (eg, ergotamine), or you have taken disulfiram within the past 2
- you are taking an HIV protease
inhibitor that contains alcohol (eg, amprenavir solution); check with your
pharmacist if you are unsure if the medicine contains alcohol
- you drink alcohol
Before using Metronidazole :
Some medical conditions may interact with Metronidazole .
Tell your doctor or pharmacist if you have any medical conditions, especially if
any of the following apply to you:
- if you are pregnant, planning to
become pregnant, or are breast-feeding
- if you are taking any
prescription or nonprescription medicine, herbal preparation, or dietary
- if you have
allergies to medicines, foods, or other substances
- if you have nerve, brain, or
blood problems; Crohn disease; or a history of liver problems
- if you have heart
problems (eg, congestive heart failure) or a history of swelling
of the hands, legs, or feet
- Disulfiram because side effects,
such as mental or mood changes, may occur
- Amiodarone because the risk of
irregular heartbeat may be increased
- Barbiturates (eg, phenobarbital)
or phenytoin because they may decrease Metronidazole ‘s effectiveness
- Anticoagulants (eg, warfarin),
busulfan, cyclosporine, ergot alkaloids (eg, ergotamine), HIV protease
inhibitors containing alcohol (eg, amprenavir solution), lithium, or
macrolide immunosuppressants (eg, tacrolimus) because the risk of their side
effects may be increased by Metronidazole
- Corticosteroids (eg, prednisone)
because the risk of side effects may be increased
How to use Metronidazole :
Use Metronidazole as directed by your doctor. Check the label
on the medicine for exact dosing instructions.
- Metronidazole is usually given as
an injection at your doctor’s office, hospital, or clinic.
If you will be using Metronidazole at home, a health care provider will
teach you how to use it. Be sure you understand how to use Metronidazole .
Follow the procedures you are taught when you use a dose. Contact your
health care provider if you have any questions.
- Do not use Metronidazole if it
contains particles, is cloudy or discolored, or if the vial is cracked or
- To clear up your infection
completely, use Metronidazole for the full course of treatment. Keep using
it even if you feel better in a few days.
- Keep this product, as well as
syringes and needles, out of the reach of children and
pets. Do not reuse needles, syringes, or other materials. Ask your health
care provider how to dispose of these materials after use. Follow all local
rules for disposal.
- If you miss a dose of
Metronidazole , use it as soon as possible. If it is almost time for your
next dose, skip the missed dose and go back to your regular dosing schedule.
Do not use 2 doses at once.
Important safety information:
- Metronidazole may cause
dizziness. This effect may be worse if you take it with alcohol or certain
medicines. Use Metronidazole with caution. Do not drive or perform other
possibly unsafe tasks until you know how you react to it.
- Do not drink alcohol while you
are using Metronidazole and for at least 1 day after the last dose.
- Contact your doctor right away if
stomach pain or cramps, severe diarrhea, or bloody stools occur. Do not
treat diarrhea without first checking with your doctor.
- Metronidazole only works against
bacteria; it does not treat viral infections (eg, the common cold).
- Be sure to use Metronidazole for
the full course of treatment. If you do not, the medicine may not clear up
your infection completely. The bacteria could also become less sensitive to
this or other medicines. This could make the infection harder to treat in
- Long-term or repeated use of
Metronidazole may cause a second infection. Tell your doctor if signs of a
second infection occur. Your medicine may need to be changed to treat this.
- Metronidazole may interfere with
certain lab tests. Be sure your doctor and lab personnel know you are using
- Lab tests, including liver
function and white blood cell counts, may be performed while you use
Metronidazole . These tests may be used to monitor your condition or check
for side effects. Be sure to keep all doctor and lab appointments.
- Use Metronidazole with caution in
the ELDERLY; they may be more sensitive to its effects.
- Metronidazole should be used with
extreme caution in CHILDREN; safety and effectiveness in children have not
- PREGNANCY and BREAST-FEEDING: If
you become pregnant, contact your doctor. You will need to discuss the
benefits and risks of using Metronidazole while you are pregnant. Do not use
Metronidazole in the first 3 months of pregnancy. Metronidazole is found in
breast milk. Do not breast-feed while using Metronidazole .
Possible side effects of Metronidazole :
All medicines may cause side effects, but many people have
no, or minor, side effects. Check with your doctor if any
of these most COMMON side effects persist or become bothersome:
Appetite loss; constipation; diarrhea; dizziness; headache;
metallic taste; nausea; pain, swelling, or redness at the injection site;
stomach upset; vomiting.
Seek medical attention right away if any of these SEVERE
side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty
breathing; tightness in the chest; swelling of the mouth, face, lips, or
tongue; fever; flushing; stuffy
nose; very dry mouth or vagina); bloody stools; decreased
coordination; increased or decreased urination; numbness, tingling, or burning
of the arms, hands, legs, or feet; red, swollen, blistered, or peeling skin;
seizures; severe diarrhea; severe or persistent dizziness or headache; sore
throat, chills, or fever; speech problems; stiff neck; stomach pain or cramps;
vaginal itching, odor, or discharge; vision loss or other vision changes;
white patches in the mouth.