Europe — EMA
Monoclox (Cloxacillin)
GNH USA supplies Monoclox (Cloxacillin), a penicillinase‑resistant penicillin for skin, bone, joint and respiratory infections caused by Staphylococcus
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What is Cloxacillin?
Cloxacillin, the active ingredient in Monoclox, is a penicillinase‑resistant penicillin presented as an injectable solution for intravenous use. It treats infections caused by penicillinase‑producing Staphylococcus aureus and is employed in both adult and pediatric patients. GNH USA supplies Monoclox as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.
What is Cloxacillin used for?
Monoclox is a penicillinase‑resistant penicillin used to manage bacterial infections in various organ systems. - Penicillinase‑producing Staphylococcus aureus infections: provides effective bacterial eradication. - Skin and soft‑tissue infections: reduces inflammation and promotes healing. - Bone and joint infections: helps eliminate deep‑seated bacterial colonisation. - Respiratory tract infections: controls bacterial proliferation in the airways.
What are the side effects of Cloxacillin?
Adverse reactions may occur with any antibacterial therapy.
Common Side Effects: - Diarrhea: mild to moderate loose stools. - Nausea: feeling of stomach upset. - Vomiting: expulsion of stomach contents. - Rash: erythematous skin eruption. - Injection site pain: local discomfort at infusion site. - Elevated liver enzymes: transient increase in hepatic transaminases.
Serious or Rare Side Effects: - Anaphylaxis: severe, potentially life‑threatening allergic reaction. - Stevens‑Johnson syndrome: extensive skin detachment and mucosal involvement. - Clostridioides difficile‑associated colitis: severe diarrhea due to bacterial overgrowth. - Neutropenia: marked reduction in neutrophil count. - Hepatitis: inflammation of the liver with jaundice. - Renal impairment: decreased kidney function, especially with prolonged therapy.
What precautions apply to Cloxacillin?
Cloxacillin requires careful patient assessment and monitoring. - Renal function: evaluate creatinine clearance before initiation. - Hepatic function: monitor liver enzymes during prolonged treatment. - Allergy history: avoid in patients with known penicillin hypersensitivity. - Concomitant drugs: review for potential interactions that may alter efficacy or toxicity. - Pregnancy and lactation: use only when benefit outweighs potential risk to fetus or infant. - Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.
What does Cloxacillin interact with?
Cloxacillin may interact with several medicines, requiring clinical vigilance.
Major Interactions (Avoid): - Methotrexate: increased toxicity and bone‑marrow suppression. - Oral contraceptives: reduced hormonal efficacy, risk of unintended pregnancy.
Moderate Interactions (Monitor Closely): - Warfarin: potential enhancement of anticoagulant effect, monitor INR. - Allopurinol: heightened risk of skin rash, including severe reactions. - Aminoglycosides: additive nephrotoxic potential, assess renal parameters.



