How to Use Terramycin in the Eye for Treating Animal Infections
Terramycin ophthalmic ointment is a trusted and effective treatment designed for the topical application in the eyes of various animals including dogs, cats, birds, horses, cattle, and sheep. The medication combines two powerful antibiotics—oxytetracycline and polymyxin B sulfate—to combat a broad spectrum of bacterial infections impacting the eyes.
Understanding the Active Ingredients
- Oxytetracycline: A tetracycline-class antibiotic that halts bacterial protein synthesis, preventing replication.
- Polymyxin B sulfate: A polypeptide antibiotic that disrupts bacterial cell membranes, leading to cell death.
Together, these components offer synergistic action to treat common ocular conditions like conjunctivitis, keratitis, blepharitis, corneal ulcers, and secondary infections from diseases such as distemper in dogs.
Proper Application of Terramycin in the Eye
To ensure effectiveness and minimize the risk of complications, it’s vital to follow proper application protocols. Here’s how to apply the ointment:
- Wash your hands thoroughly before use.
- Gently retract the lower eyelid to expose the conjunctival sac.
- Apply a small strip (about 1 cm or ¼ inch) of ointment directly into the eye.
- Allow the eyelid to close naturally and spread the medication.
- Avoid touching the applicator tip to any surface, including the eye.
- Follow with 2–4 applications per day as prescribed.
- Wait 5–10 minutes before using other eye medications.
Any crusting or discharge should be gently cleaned with a sterile compress before application.
Duration and Dosing
Treatment duration varies based on the severity of the infection. In many cases, improvement is seen within days, but continuation is necessary until full recovery. Do not discontinue prematurely unless advised by a veterinarian.
Precautions and Side Effects
- Do not use in animals allergic to oxytetracycline, polymyxin B, or other tetracyclines.
- Use cautiously in pregnant or nursing animals.
- Prolonged use may result in resistant organisms or secondary infections.
- Watch for signs of allergic reactions such as facial swelling, itching, vomiting, or breathing difficulty—urgent veterinary help is required if these occur.
Minor irritation or temporary stinging may occur but often resolves quickly. Rare but serious reactions may include sensitivity in certain species like cats.
Storage and Medication Handling
- Store at temperatures between 59–77°F (15–25°C).
- Keep the tube tightly closed and out of reach of pets and children.
- Discard the tube after four weeks of opening.
- Do not use if the ointment changes color or consistency.
Animal-Specific Usage
While usage is similar across species, avian patients require veterinarian-specific dosing. Always consult a vet with experience in treating the relevant animal species.
Important Reminders
- Only use as directed by a veterinarian.
- Continue treatment for the full prescribed duration.
- Monitor progress and consult the vet if symptoms worsen.
- Do not use in humans. If accidental exposure occurs, seek medical advice.
Conclusion
Terramycin ophthalmic ointment is a highly effective medication for treating superficial bacterial eye infections in animals. Proper application, dosage, and veterinary guidance are key to ensuring safe and successful recovery. Whether you're treating a dog with pink eye or managing a more complex infection in livestock, Terramycin provides a reliable solution with a long track record of efficacy.





