Moflok (Moxifloxacin Hydrochloride)

Moflok (moxifloxacin hydrochloride) is a fluoroquinolone antibacterial indicated for bacterial infections of the eye.

• Bacterial conjunctivitis: reduces bacterial load and resolves inflammation in the infected conjunctiva.
• Keratitis: eradicates causative bacteria and promotes corneal healing.
• Blepharitis: controls bacterial overgrowth on eyelid margins.
• Post‑surgical ocular infection: prevents or treats bacterial contamination after eye surgery.
• Other ocular bacterial infections: treats bacterial involvement in conditions such as postoperative eye infections or marginal keratitis.

• Moxifloxacin hydrochloride inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, enzymes essential for DNA supercoiling and replication. By binding to the quinolone‑binding site, it prevents relaxation of supercoiled DNA, halting bacterial DNA synthesis and transcription, which leads to bacterial cell death. This broad‑spectrum activity covers Gram‑positive and Gram‑negative ocular pathogens.

Moflok may cause ocular adverse reactions, which are categorized by frequency.

Common Side Effects

• Eye irritation or burning sensation.
• Transient redness of the conjunctiva.
• Increased tearing.
• Temporary blurred vision.

Serious or Rare Side Effects

• Corneal ulceration or stromal thinning.
• Severe allergic reaction, including angioedema.
• Sudden loss of vision.

When prescribing Moflok, consider the following precautions:

• Assess patient for known hypersensitivity to fluoroquinolones: avoid use if allergic.
• Use only for indicated bacterial infections: do not treat viral conjunctivitis.
• Monitor for signs of corneal toxicity: discontinue if severe irritation persists.
• Avoid concomitant use with contact lenses unless advised: lenses may retain drug.
• Pregnancy and lactation: safety not established; weigh benefits and risks.
• Store at room temperature: keep in original container, protect from light and moisture.

Moflok can interact with other ophthalmic agents; review the following interactions.

Major Interactions (Avoid)

• Concurrent use with other ophthalmic fluoroquinolones: increased risk of ocular toxicity.
• Systemic fluoroquinolones: may potentiate systemic side effects such as tendon disorders.
• Topical corticosteroids: may mask signs of infection and delay healing.

Moderate Interactions (Monitor Closely)

• Anticholinergic eye drops: may affect pupil response.
• Herbal ocular preparations: possible reduced efficacy of the antibiotic.
• Contact lens solutions containing preservatives: may cause additional irritation.