Flagyl; Metrogyl (brand availability varies by market)
Dosage form
Tablet
Strength
200 mg, 400 mg, 500 mg tablets; formulations and strengths vary by indication.
Prescription classification
Prescription only (Schedule H / verified)
Applies to
IN; product status and availability may vary by jurisdiction
Approved indications
Metronidazole is an antimicrobial used for selected anaerobic bacterial and protozoal infections. The formulation, dose, and treatment length depend on the specific condition — it is not a catch-all for every infection.
Contraindications (do not use if…)
Do not take metronidazole if you have had a serious allergic reaction to it or a related nitroimidazole medicine. Review product-specific restrictions with your doctor before starting.
Important precautions
Avoid alcohol during treatment and for the period stated on the leaflet after your last dose. Tell your prescriber about liver or nervous-system conditions and all other medicines, especially anticoagulants.
Common side effects
Common side effects include nausea, a metallic taste, stomach discomfort, diarrhoea, and headache.
Serious side effects — seek urgent medical care
Get urgent medical help for seizures, severe or persistent numbness or tingling, a serious allergic reaction, confusion, or signs of liver injury.
Important interactions
Metronidazole can interact with warfarin, lithium, disulfiram, and some seizure medicines. Check the exact product label and review your medicine list with a pharmacist.
Allergy considerations
Avoid metronidazole if you have had a serious reaction to it or a related nitroimidazole.
Pregnancy and lactation
Pregnancy safety
Use with caution — see notes
Notes
A clinician should decide whether metronidazole is appropriate in pregnancy, considering the infection, trimester, and the specific formulation.
Information
Lactation safety
Use with caution — see notes
Notes
The right approach while breastfeeding depends on the dose and regimen. Speak with a doctor or pharmacist for advice specific to your situation.
Children and older adults
Paediatric dosing and formulation depend on the child's age, weight, and infection. Only use a clinician-approved regimen for children.
Storage
Store in the original packaging, away from moisture and heat. Follow any product-specific storage instructions.
Missed dose
Follow your prescription leaflet. If it is almost time for the next dose, do not take two together — just continue with the usual schedule.
Overdose
If you suspect an overdose, seek medical advice promptly — especially if vomiting, unsteadiness, confusion, or neurological symptoms occur.
If you suspect an overdose or accidental poisoning:
contact your local emergency services or the nearest hospital emergency department immediately. Do not wait for symptoms.
Flagyl; Metrogyl (brand availability varies by market)
Dosage form
Tablet
Strength
200 mg, 400 mg, 500 mg tablets; formulations and strengths vary by indication.
Prescription classification
Prescription only (Schedule H / verified)
Applies to
IN; product status and availability may vary by jurisdiction
Approved indications
Metronidazole is an antimicrobial used for selected anaerobic bacterial and protozoal infections. The formulation, dose, and treatment length depend on the specific condition — it is not a catch-all for every infection.
Contraindications (do not use if…)
Do not take metronidazole if you have had a serious allergic reaction to it or a related nitroimidazole medicine. Review product-specific restrictions with your doctor before starting.
Important precautions
Avoid alcohol during treatment and for the period stated on the leaflet after your last dose. Tell your prescriber about liver or nervous-system conditions and all other medicines, especially anticoagulants.
Common side effects
Common side effects include nausea, a metallic taste, stomach discomfort, diarrhoea, and headache.
Serious side effects — seek urgent medical care
Get urgent medical help for seizures, severe or persistent numbness or tingling, a serious allergic reaction, confusion, or signs of liver injury.
Important interactions
Metronidazole can interact with warfarin, lithium, disulfiram, and some seizure medicines. Check the exact product label and review your medicine list with a pharmacist.
Allergy considerations
Avoid metronidazole if you have had a serious reaction to it or a related nitroimidazole.
Pregnancy and lactation
Pregnancy safety
Use with caution — see notes
Notes
A clinician should decide whether metronidazole is appropriate in pregnancy, considering the infection, trimester, and the specific formulation.
Information
Lactation safety
Use with caution — see notes
Notes
The right approach while breastfeeding depends on the dose and regimen. Speak with a doctor or pharmacist for advice specific to your situation.
Children and older adults
Paediatric dosing and formulation depend on the child's age, weight, and infection. Only use a clinician-approved regimen for children.
Storage
Store in the original packaging, away from moisture and heat. Follow any product-specific storage instructions.
Missed dose
Follow your prescription leaflet. If it is almost time for the next dose, do not take two together — just continue with the usual schedule.
Overdose
If you suspect an overdose, seek medical advice promptly — especially if vomiting, unsteadiness, confusion, or neurological symptoms occur.
If you suspect an overdose or accidental poisoning:
contact your local emergency services or the nearest hospital emergency department immediately. Do not wait for symptoms.
