Maxibiotic (Bacitracin Zinc, Neomycin Sulfate, Polymyxin B Sulfate)

• Maxibiotic is a topical antibacterial preparation used for skin conditions caused by susceptible bacteria.
• Impetigo: reduces bacterial load and promotes healing of superficial infection caused by Staphylococcus aureus or Streptococcus pyogenes.
• Minor cuts and abrasions: prevents infection and supports tissue repair on small traumatic lesions.
• Superficial burns: provides antibacterial protection to aid recovery of first‑degree burns.
• Post‑surgical wound care: helps prevent bacterial colonisation of minor incision sites.

• Bacitracin Zinc interferes with bacterial cell‑wall synthesis by blocking the dephosphorylation of bactoprenol, Neomycin Sulfate binds to the 30S ribosomal subunit inhibiting protein synthesis, and Polymyxin B Sulfate disrupts the bacterial cell membrane through interaction with lipopolysaccharides, leading to rapid cell death. The combined actions provide broad‑spectrum coverage against Gram‑positive and Gram‑negative organisms on the skin surface.

Topical application of Maxibiotic may cause local reactions, although most are mild and self‑limiting.

Common Side Effects

• Local irritation or burning sensation at the application site.
• Redness or mild erythema.
• Itching or pruritus.
• Dryness or peeling of the skin.
• Minor rash or papular eruption.

Serious or Rare Side Effects

• Allergic contact dermatitis with swelling or vesiculation.
• Anaphylactic reaction presenting with systemic urticaria, airway compromise.
• Nephrotoxicity or ototoxicity if absorbed in large amounts, especially with extensive use.
• Severe skin necrosis or ulceration.
• Systemic hypersensitivity reactions such as fever or malaise.

• Before using Maxibiotic, consider the following safety measures.
• Allergy assessment: avoid if known hypersensitivity to any component.
• Pregnancy and lactation: use only when the benefit outweighs potential risk.
• Age considerations: apply with caution in infants and the elderly.
• Application area: limit to small, intact skin surfaces; avoid eyes, ears, mucous membranes.
• Concurrent skin conditions: do not use on eczematous, ulcerated or compromised skin.
• Store at room temperature: keep in the original container, protect from moisture and heat.

Topical and systemic agents may influence the safety or efficacy of Maxibiotic.

Major Interactions (Avoid)

• Systemic aminoglycosides: increased risk of nephrotoxicity and ototoxicity.
• Concurrent topical antibiotics: heightened local irritation and allergic potential.

Moderate Interactions (Monitor Closely)

• Topical corticosteroids: may reduce antibacterial effectiveness.
• Antifungal agents: possible antagonistic effect on bacterial coverage.
• Silver‑containing dressings: may interact with polymyxin B activity.