Oftalmolosa Cusí Aureomicina (Chlortetracycline Hydrochloride)

Oftalmolosa Cusí Aureomicina, a tetracycline antibiotic, is indicated for bacterial infections of the eye surface and related structures.

• Bacterial conjunctivitis: reduces microbial load and accelerates symptom relief.
• Keratitis: helps eradicate the causative bacteria and supports corneal healing.
• Blepharitis: controls bacterial overgrowth on the eyelid margins.
• Post‑surgical prophylaxis: lowers the risk of infection after ocular procedures.

• Chlortetracycline binds to the 30S ribosomal subunit of susceptible bacteria, inhibiting the addition of aminoacyl‑tRNA to the growing peptide chain. This blocks protein synthesis, producing a bacteriostatic effect that limits bacterial replication in ocular tissues.

Adverse reactions to topical chlortetracycline are generally mild and related to local ocular tolerance.

Common Side Effects

• Eye irritation: transient burning or stinging sensation.
• Redness: mild conjunctival hyperemia.
• Pruritus: itching around the application site.
• Tearing: increased lacrimation.
• Foreign‑body sensation: feeling of grit in the eye.

Serious or Rare Side Effects

• Allergic contact dermatitis: swelling, rash or hives around the eye.
• Severe ocular inflammation: marked pain, photophobia or vision changes.
• Stevens‑Johnson syndrome: extensive mucocutaneous lesions (rare).

When using Oftalmolosa Cusí Aureomicina, consider the following precautions:

• Contraindication: avoid in patients with known hypersensitivity to tetracyclines.
• Pregnancy: use only if clearly needed; limited data suggest caution.
• Breastfeeding: potential secretion in milk; weigh benefits against risks.
• Pediatric use: safety not established in children under 8 years for systemic exposure, but topical use follows local guidelines.
• Contact lens wearers: remove lenses before application and re‑insert after the recommended interval.
• Store at ambient temperature: keep in original container, protect from light and moisture.

Chlortetracycline may interact with other ophthalmic agents and systemic medications.

Major Interactions (Avoid)

• Concurrent use with other tetracycline antibiotics: may increase local toxicity.
• Combination with ophthalmic corticosteroids: can mask infection signs.

Moderate Interactions (Monitor Closely)

• Antacids or iron supplements (systemic): may reduce oral absorption if taken concurrently.
• Fluoroquinolone eye drops: potential additive irritation.
• Systemic doxycycline: overlapping tetracycline class effects.
• Preservative‑containing drops: may increase ocular surface irritation.