Product image of Oxacilina Atb (Oxacillin) supplied by GNH India

Oxacilina Atb

Active Ingredient:
Oxacillin
Origin:
EU

Oxacilina Atb (Oxacillin)

Oxacillin, the active ingredient in Oxacilina Atb, is a penicillinase‑resistant penicillin presented as a strength/form for oral use. It treats bacterial infections caused by susceptible Gram‑positive organisms, particularly in skin, bone and respiratory sites, and is used in both adult and pediatric patients.
GNH India supplies Oxacilina Atb as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals and pharmacies worldwide.

Manufacturer / TM Owner

Antibiotice Sa

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Indications & Clinical Uses

Oxacilina Atb is a penicillinase‑resistant penicillin indicated for infections caused by susceptible bacteria. It is used in:

  • Skin and soft‑tissue infections: helps eradicate *Staphylococcus aureus* including penicillin‑resistant strains.
  • Bone and joint infections: assists in treating osteomyelitis caused by susceptible organisms.
  • Respiratory tract infections: effective against *Streptococcus pneumoniae* and *Haemophilus influenzae* in community‑acquired pneumonia.
  • Endocarditis prophylaxis: used pre‑operatively to prevent infection in at‑risk patients.
  • Urinary tract infections: treats uncomplicated UTIs caused by susceptible Gram‑positive bacteria.

How It Works

  • Oxacillin exerts its antibacterial effect by binding irreversibly to penicillin‑binding proteins (PBPs) on the bacterial cell wall. This inhibits the transpeptidation step of peptidoglycan synthesis, weakening the wall and leading to osmotic lysis of susceptible Gram‑positive organisms. Its structure resists hydrolysis by staphylococcal penicillinase, preserving activity against penicillin‑resistant strains.

Side Effects

Oxacilina Atb may cause a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

  • Gastrointestinal upset: nausea, vomiting or diarrhoea.
  • Skin reactions: mild rash or pruritus.
  • Local injection site irritation (if administered parenterally).
  • Transient elevation of liver enzymes.
  • Headache or dizziness.

Serious or Rare Side Effects

  • Anaphylaxis or severe hypersensitivity reactions.
  • Clostridioides difficile‑associated colitis.
  • Hemolytic anemia or neutropenia.
  • Acute interstitial nephritis.
  • Stevens‑Johnson syndrome or toxic epidermal necrolysis.

Precautions & Warnings

Before prescribing Oxacilina Atb, clinicians should consider several safety aspects.

  • Allergy assessment: avoid in patients with known penicillin allergy.
  • Renal function: adjust dose in severe renal impairment.
  • Hepatic function: monitor liver enzymes in patients with liver disease.
  • Concomitant antibiotics: evaluate risk of superinfection.
  • Pregnancy and lactation: use only if clearly needed after risk‑benefit analysis.
  • Store at below 25°C: keep in the original container, protect from moisture and direct sunlight.

Avoid Interactions

Oxacillin can interact with several medicines, altering efficacy or safety.

Major Interactions (Avoid)

  • Methotrexate: increased toxicity due to reduced renal clearance.
  • Warfarin: potentiation of anticoagulant effect, requiring INR monitoring.
  • Oral contraceptives: reduced plasma concentrations, decreasing contraceptive reliability.

Moderate Interactions (Monitor Closely)

  • Aminoglycosides: additive nephrotoxicity risk.
  • Probenecid: may increase oxacillin plasma levels.
  • Diuretics: heightened risk of electrolyte disturbances.

Frequently Asked Questions

Oxacilina Atb contains oxacillin, a penicillinase‑resistant penicillin used to treat bacterial infections such as skin and soft‑tissue infections, bone and joint infections, respiratory tract infections, endocarditis prophylaxis, and uncomplicated urinary tract infections caused by susceptible Gram‑positive organisms.

Oxacillin binds irreversibly to penicillin‑binding proteins on the bacterial cell wall, blocking the transpeptidation step of peptidoglycan synthesis. This weakens the wall, causing osmotic lysis of susceptible bacteria, and its structure resists degradation by staphylococcal penicillinase.

The dosage of Oxacilina Atb is determined by the prescribing clinician based on the infection type, severity, patient age, weight, and renal function. Healthcare professionals should follow local guidelines and adjust the regimen as needed.

Oxacillin is classified as pregnancy category B in many regions, indicating no evidence of fetal risk in animal studies, but human data are limited. It may be used during pregnancy or lactation only when clearly needed, after a risk‑benefit assessment by the prescriber.

To order, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any required import documentation.

Oxacillin is a penicillinase‑resistant penicillin, offering activity against staphylococci that produce penicillinase, unlike penicillin G or ampicillin. Compared with broader‑spectrum agents such as cefazolin, oxacillin provides a narrower spectrum, which can reduce impact on normal flora while still covering key Gram‑positive pathogens.

Oxacilina Atb should be stored at temperatures below 25 °C, in its original packaging, protected from moisture and direct sunlight. Maintaining these conditions helps preserve potency throughout its shelf life.

Oxacilina Atb is supplied as an oral tablet (or oral suspension if formulated) and is taken by mouth with or without food, as directed by the prescriber. The exact administration schedule depends on the infection being treated.

Serious adverse reactions include anaphylaxis, severe skin reactions such as Stevens‑Johnson syndrome, Clostridioides difficile‑associated colitis, hemolytic anemia, neutropenia, and acute interstitial nephritis. Patients should be monitored for signs of hypersensitivity or organ toxicity.

Oxacilina Atb is contraindicated in individuals with a known hypersensitivity to oxacillin, other penicillins, or any component of the formulation. Caution is also advised for patients with severe renal impairment, a history of severe allergic reactions, or those taking interacting medications without appropriate monitoring.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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