Metronidazole Noridem (Metronidazole)

Metronidazole Noridem is a nitroimidazole antimicrobial used to treat infections caused by anaerobic bacteria and susceptible protozoa.

• Bacterial vaginosis: eradicates the anaerobic bacteria responsible, relieving discharge and odor.
• Trichomoniasis: eliminates Trichomonas vaginalis, curing infection and preventing recurrence.
• Amebic dysentery: destroys Entamoeba histolytica trophozoites, reducing intestinal inflammation.
• Giardiasis: clears Giardia lamblia, alleviating diarrhea and malabsorption.
• Anaerobic bacterial infections: targets a broad range of anaerobes in intra‑abdominal, skin and soft‑tissue infections.
• Clostridioides difficile infection: suppresses toxin‑producing C. difficile, aiding clinical resolution.

• Metronidazole is reduced within anaerobic microorganisms to generate nitro radicals that interact with DNA, causing strand breakage and inhibition of nucleic acid synthesis. This DNA damage leads to cell death in susceptible bacteria and protozoa while having minimal effect on aerobic cells.

Metronidazole Noridem may cause a range of adverse reactions, from mild to severe.

Common Side Effects

• Nausea: mild to moderate upset stomach.
• Metallic taste: transient metallic sensation in the mouth.
• Headache: occasional mild to moderate headache.
• Diarrhea: loose stools during therapy.

Serious or Rare Side Effects

• Seizures: rare neurologic events requiring immediate attention.
• Peripheral neuropathy: tingling or numbness in extremities.
• Severe allergic reaction: rash, swelling, or anaphylaxis.
• Hepatic toxicity: elevated liver enzymes or jaundice.
• Stevens‑Johnson syndrome: severe skin blistering.
• Neutropenia: marked reduction in white blood cells.

Before using Metronidazole Noridem, consider the following safety measures.

• Renal impairment: adjust dosing and monitor renal function.
• Hepatic impairment: use with caution and monitor liver enzymes.
• Alcohol consumption: avoid alcohol to prevent a disulfiram‑like reaction.
• Pregnancy: prescribe only if the potential benefit outweighs the risk.
• Concurrent metronidazole therapy: avoid duplicate therapy to prevent excess exposure.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Metronidazole Noridem can interact with several medicines; some require avoidance while others need monitoring.

Major Interactions (Avoid)

• Alcohol: may cause severe nausea, vomiting, and flushing.
• Warfarin: can increase anticoagulant effect and bleeding risk.
• Lithium: may raise lithium concentrations, leading to toxicity.

Moderate Interactions (Monitor Closely)

• Cimetidine: may raise metronidazole plasma levels.
• Phenobarbital: may reduce metronidazole concentrations, lowering efficacy.
• Oral contraceptives: may decrease hormonal effectiveness, requiring additional contraception.