Flupen is prescribed for treating infections caused by Gram-positive bacteria, including penicillinase-producing staphylococci. It is commonly used for:
✔ Skin and soft tissue infections – boils, abscesses, carbuncles, infected ulcers, eczema, acne, furunculosis, cellulitis, infected wounds and burns, otitis media and externa, and impetigo.
✔ Respiratory tract infections – pneumonia, lung abscess, empyema, sinusitis, pharyngitis, tonsillitis, and quinsy.
✔ Other infections – osteomyelitis, enteritis, endocarditis, urinary tract infections, meningitis, and septicemia.
✔ Surgical prophylaxis – Used before major procedures such as cardiothoracic and orthopedic surgeries.
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Flucloxacillin is a penicillinase-resistant antibiotic effective against Gram-positive bacteria but has minimal effect on Gram-negative organisms. It works by inhibiting bacterial cell wall synthesis, preventing bacterial growth and replication.
✔ It interferes with peptidoglycan synthesis, a crucial component that strengthens bacterial cell walls.
✔ It inhibits transpeptidase enzymes, leading to cell wall weakening and bacterial rupture.
✔ Flucloxacillin is resistant to bacterial penicillinase, making it effective against penicillin-resistant staphylococci.
🔹 Adults – 250 mg four times daily; may be doubled for severe infections. In osteomyelitis and endocarditis, doses up to 8 g per day may be used in 6–8 hour intervals.
🔹 Children (2-10 years) – Half the adult dose.
🔹 Children (under 2 years) – Quarter of the adult dose.
✔ Severe renal impairment (Creatinine clearance <10 ml/min) – Requires dose adjustment or extended dosing intervals.
🔹 Adults & Elderly:
🔹 Children:
💊 Oral doses should be taken 1 hour before meals.
🔹 Use only as directed by a registered physician.
Concurrent use of Flupen with certain medications may lead to prolonged elevated levels in the bloodstream. Always consult a doctor before combining it with other medicines.
❌ Not suitable for individuals allergic to penicillin.
✔ Gastrointestinal issues – nausea, vomiting, diarrhea, dyspepsia, and minor stomach discomfort.
✔ Allergic reactions – rashes, urticaria, purpura, and fever.
✔ Other complications – interstitial nephritis, hepatitis, and cholestatic jaundice.
✔ Pregnancy Category B (US FDA): No confirmed risks in human studies, but should be used only if necessary during pregnancy.
✔ Excretion in breast milk: Flucloxacillin is present in human milk, so caution is advised for breastfeeding mothers.
✔ Use with caution in patients with liver disorders.
✔ Patients with a history of allergies should be monitored carefully.
✔ Store in a dry place away from direct light and heat.
✔ Keep out of reach of children.
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