B.N.P. Triple Antibiotic Ophthalmic Ointment (Also Known As Tricin) is a sterile ointment that is used to topically treat eye infections. B.N.P. Triple Antibiotic Ophthalmic Ointment contains bacitracin, neomycin, and polymyxin B. This combination of antibiotics are used to treat bacterial infections caused by various bacteria. The sterile ointment is usually applied as a thin film to the eye 3 or 4 times a day. Sensitivity is rare, however if a reaction occurs, discontinue use. As with any antibiotic preparation, prolonged use may result in the overgrowth of nonsusceptible organisms, including fungi. Appropriate measures should be taken if this occurs. If infection does not respond to treatment in two or three days, the diagnosis and therapy should be re-evaluated. If your pet has swelling of the face or itching, or appears to have difficulty breathing, contact your veterinarian immediately. Care should be taken not to contaminate the applicator tip of the tube during application. Do not allow the applicator tip to come in contact with any tissue.