PRECAUTIONS General: As with other antibiotic preparations, prolonged use may result in overgrowth of nonsusceptible organisms, including fungi. If superinfection occurs, appropriate therapy should be initiated. Cross-sensitivity to other aminoglycoside antibiotics may occur; if hypersensitivity develops with this product, discontinue use and institute appropriate therapy. Patients should be advised not to wear contact lenses if they have signs and symptoms of bacterial ocular infection. Information for Patients: Do not touch dropper tip to any surface, as this may contaminate the solution. Pregnancy: Reproduction studies in three types of animals at doses up to thirty-three times the normal human systemic dose have revealed no evidence of impaired fertility or harm to the fetus due to tobramycin. There are, however, no adequate and well-controlled studies in pregnant women. Because animal studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed. Nursing Mothers: Because of the potential for adverse reactions in nursing infants from TOBREX®, a decision should be made whether to discontinue nursing the infant or discontinue the drug, taking into account the importance of the drug to the mother. Pediatric Use: Safety and effectiveness in pediatric patients below the age of 2 months has not been established. Geriatric Use: No overall differences in safety or effectiveness have been observed between elderly and younger patients.