MEROZA IV 500 MG is a sterile, lyophilized powder for intravenous (IV) infusion, containing Meropenem, a broad-spectrum carbapenem antibiotic. It is used for the treatment of severe bacterial infections, including multi-drug resistant (MDR) infections.
Composition
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Active Ingredient:
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Meropenem Trihydrate (equivalent to 500 mg Meropenem per vial)
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Excipients:
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Sodium carbonate (for pH adjustment)
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Sterile Water for Injection (after reconstitution)
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Mechanism of Action
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Bactericidal action by inhibiting bacterial cell wall synthesis (binds to penicillin-binding proteins [PBPs]).
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Broad-spectrum activity against:
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Gram-negative bacteria (E. coli, Klebsiella, Pseudomonas)
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Gram-positive bacteria (Streptococcus pneumoniae)
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Anaerobic bacteria (Bacteroides fragilis)
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Resistant to most beta-lactamases, but not metallo-beta-lactamases (MBLs).
Dosage & Administration
Standard Adult Dose:
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500 mg IV every 8 hours (for mild-moderate infections).
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1 g IV every 8 hours (for severe infections like meningitis, hospital-acquired pneumonia).
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Infusion Time: Over 15–30 minutes (or extended infusion in critical cases).
Pediatric Dose:
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20 mg/kg every 8 hours (max 2 g/day for severe infections).
Renal Dose Adjustment:
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CrCl 25–50 mL/min: 500 mg–1 g every 12 hours.
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CrCl <25 mL/min: 250–500 mg every 24 hours.
Uses (Indications)
✔ Complicated intra-abdominal infections (with metronidazole for anaerobes)
✔ Bacterial meningitis (in pediatric & adult patients)
✔ Hospital-acquired pneumonia (HAP) & ventilator-associated pneumonia (VAP)
✔ Complicated skin & soft tissue infections
✔ Septicemia (bloodstream infections)
✔ Febrile neutropenia (empiric therapy)
Storage
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Unreconstituted powder: Store below 25°C, protect from moisture.
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Reconstituted solution:
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Stable for 1 hour at RT (25°C) or 24 hours if refrigerated (2–8°C).
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Do not freeze.
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Recommendations
✔ Administer as IV infusion (15–30 min); extended infusion (3 hours) for critical infections.
✔ Monitor renal function, liver enzymes, and CBC during therapy.
✔ Not effective against MRSA (add vancomycin/linezolid if MRSA suspected).
Important Note
Contraindications:
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Hypersensitivity to meropenem or other carbapenems (e.g., imipenem).
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History of severe anaphylaxis to beta-lactams.
Side Effects:
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Common:Â Diarrhea, nausea, headache, rash.
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Serious: Seizures (in high doses), C. difficile colitis, thrombocytopenia.
Drug Interactions:
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Valproic acid: ↓ Levels (increased seizure risk).
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Probenecid: ↑ Meropenem levels (avoid concurrent use).
Pregnancy & Lactation:
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Category BÂ (use only if benefits outweigh risks).
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Breastfeeding:Â Caution (small amounts excreted in milk).
Presentation
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Single-dose vial (500 mg powder for reconstitution).
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