Using Terramycin Ophthalmic Ointment Safely and Effectively for Animal Eye Infections
Terramycin ophthalmic ointment is a **topical antibiotic formulation** specifically designed to treat **superficial eye infections in animals** such as cats, dogs, horses, cattle, birds, and sheep. Comprised of two active ingredients—**oxytetracycline**, a tetracycline antibiotic, and **polymyxin B sulfate**, a polypeptide antibiotic—Terramycin offers a **broad-spectrum response** to various bacterial pathogens.
Mechanism of Action
- Oxytetracycline works by inhibiting bacterial protein synthesis, effectively halting bacterial growth.
- Polymyxin B targets bacterial cell membranes, leading to cell lysis and death.
Common Indications
Terramycin is indicated for the **treatment and prevention of bacterial eye infections**, including but not limited to:
- Conjunctivitis (pink eye)
- Keratitis
- Blepharitis
- Corneal ulcers
- Secondary eye infections due to systemic conditions like canine distemper
It is effective against a variety of bacteria including **streptococci, rickettsiae, Escherichia coli**, and **Aerogenes species**.
Directions for Use
To ensure both efficacy and safety:
- Wash your hands before and after applying the ointment.
- Use a sterile compress to gently remove any crust or debris.
- Pull down the lower eyelid to expose the conjunctival sac.
- Apply a 1 cm (¼-inch) strip of ointment to the affected eye two to four times daily.
- Allow the eyelid to spread the medication naturally by blinking.
- Prevent contamination by not touching the applicator tip to any surface or the animal’s eye.
- Wait 5-10 minutes before using any other eye medications.
- Continue the full course of treatment, even if symptoms improve.
Precautions and Side Effects
Special Precautions:
- Do not use in animals with known hypersensitivity to tetracyclines or polymyxin B.
- Use cautiously in pregnant or lactating animals.
- Only use under veterinary supervision for viral infections.
Possible Side Effects:
- Minor eye irritation or temporary stinging
- Allergic reactions, including swelling, itching, vomiting, or breathing difficulties—especially in cats
- In rare cases, long-term use in young animals may affect bone and teeth development
If any of these symptoms occur, cease use immediately and consult a veterinarian.
Storage and Disposal
- Store between 59–77°F (15–25°C).
- Keep tightly capped and away from children or pets.
- Discard any remaining product 4 weeks after opening.
Additional Guidelines
- Follow all instructions provided by your veterinarian.
- Available by prescription in many countries and sometimes over-the-counter in others.
- Do not use if the ointment’s color or texture has changed.
- For birds, usage and application are similar but require avian veterinary guidance.
When to Seek Veterinary Help
If the animal’s condition does not improve within a few days or worsens, consult your veterinarian. Persistent or worsening symptoms may indicate a resistant infection or the need for a different treatment.
Conclusion
**Terramycin ophthalmic ointment is safe and effective** when used for its intended purpose: to treat superficial eye infections in pets and livestock. Always adhere strictly to dosage instructions and veterinary guidance to ensure optimal health outcomes for your animal.
