Product Information

Description

Product details

Tobramycin Ophthalmic Solution is an aminoglycoside antibiotic medication used to treat susceptible bacterial infections of the eyes. This product is an eye drop/solution.

This sterile ophthalmic solution contains tobramycin, an antibiotic used to treat susceptible bacterial infections of the eye surface in cats, dogs, and horses.
Antibiotic only- this product does not contain any steroid ingredients.
Use with caution in animals with preexisting kidney impairment.
May be prescribed for other animal species; please consult your veterinarian.
While this drug does not have an FDA-approved indication for all animal uses, it is commonly accepted for veterinarians to prescribe this medication for use in animals.

This product contains a chemical on the Prop 65 List.

*Please note: this is a generic medication. Product packaging and appearance, including size, color, and shape, may differ from the description or images provided and are subject to manufacturer availability.

Sourced directly from the manufacturer or their approved distributor. Guaranteed genuine product backed by the manufacturer.

For

Dogs, Cats, and Horses

Active ingredient(s)

Tobramycin (0.3%)

Common brand names

Tobrex

Drug class

Aminoglycoside antibiotic, Ophthalmic

Product strength & size

This sterile ophthalmic solution contains 3 mg of tobramycin per 1 mL of solution. Please ensure the selected product is appropriate for your pet, as recommended by your veterinarian.

For current availability, please refer to the product selection above.

Usage

Tobramycin Ophthalmic Solution should be applied as directed by your veterinarian. Please consult your veterinarian before making any changes or discontinuing the prescribed dosing schedule.

For general ophthalmic use:

Wash your hands thoroughly with soap and water before and after application.

Pull your pet’s lower eyelid down gently, then apply the prescribed number of drops into the pocket between the eyelid and the eyeball.

Do NOT allow the tip of the tube to touch any surface, including your hands or your pet’s face and eyes, as this will contaminate the sterile surface.

If using multiple eye medications or products, separate dosing by at least 5 minutes. Eye drops should be used before eye ointments to allow for proper absorption.

Complete the entire course of treatment as prescribed, even if your pet's condition has improved. Failure to complete the entire course of treatment may cause recurrence or worsening of the infection. Contact your veterinarian ahead of time if your pet needs a refill.

Missed doses

Administer the dose as soon as possible. If it is almost time for the next dose, skip the missed dose and continue with the regular schedule. Do not apply two doses at once.

Storage

Store in a cool, dry place at a controlled temperature between 36°F and 77°F. Avoid excessive heat. Keep tightly closed when not in use and out of the reach of children and pets. Store away from heat and direct sunlight. Do not store in the bathroom, near the kitchen sink, or in damp places. The medicine may break down if exposed to heat or moisture.

Side effects

Possible side effects may include (but are not limited to): mild redness, burning, stinging, or itching of the eye/eyelid(s), temporary blurred vision, and/or squinting after application.

Topical ophthalmic medications are not typically absorbed systemically, though this may still occur in some animals (especially cats). Contact your veterinarian immediately if you observe any signs of systemic toxicity, including excessive thirst or urination, dizziness/loss of balance, and impaired hearing.

Notify your veterinarian if your pet experiences any of the effects described above, or if you notice any other side effects that are persistent or troublesome.

If you notice anything unusual, please consult your veterinarian.

Precautions

Do NOT use this medication if the solution changes in appearance (e.g., color, cloudiness, presence of visible particles, etc). These may be signs that the product is contaminated and no longer fit for use.

This product should only be used for bacterial eye infections. Do NOT use this medication in animals with fungal or viral eye infections.

Use with caution in animals with preexisting kidney impairment. Safe use of this medication has not been established in breeding, pregnant, or lactating animals.

Do NOT touch the tip of the tube with your hands or allow the tip to touch any surface, including your pet’s eyes. Contact with any surface may contaminate the product.

Contact your veterinarian if your pet’s condition does not improve or worsens within 2 to 3 days after starting this medication.

Do not administer to animals with a known history or suspected allergy/hypersensitivity to any aminoglycoside antibiotics, including this medication or any of its ingredients. Allergic reactions to medications may occur. Be sure to inform Vetsource and your veterinarian if your pet has any known drug sensitivities or allergies.

If your pet displays symptoms of an allergic reaction, discontinue therapy and call your veterinarian immediately or seek emergency veterinary attention. Symptoms may include (but are not limited to): swollen lips, tongue, face, or airways, difficulty breathing, agitation, profuse salivation, and widespread hives or itching.

Drug and food interactions

Ophthalmic medications are applied topically to the eyes and are not absorbed into the body in the same manner as oral or injectable medications. Because of this, there is limited drug interaction information for these medications; however, interactions may still be possible.

Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.

Please ensure your veterinarian is aware of all medications and supplements that your pet is currently receiving. Your veterinarian may prescribe multiple medications, even if a potential drug interaction may occur. In these instances, your veterinarian may adjust the dosages or monitor your pet more closely.

Adverse reactions

If you are concerned that your pet has experienced an adverse reaction to this medication, please contact Vetsource Pet Owner Care at 877-738-4443.

Overdose

If you have any reason to suspect an overdose, call your doctor/veterinarian or the appropriate poison control resource immediately.

For humans:

The national toll-free Poison Help line, 1-800-222-1222, will connect you to your local poison center in case of emergency. This service is available nationwide and in most U.S. territories.

For animals:

The ASPCA Animal Poison Control Center is available 24 hours a day, 365 days a year at 888-426-4435.

Pet Poison Helpline® also provides a 24/7 animal poison control service at 855-764-7661.

*Please note: this information is for third-party services and is provided for convenience in case of potential poison-related emergencies. There may be consultation fee for these services.

Disclaimer

The content provided on this page is NOT medical advice.

All content, including the images and product description above, is intended for general informational purposes only and should not be considered a substitute for professional veterinary consultation, diagnosis, or treatment.

Consult your veterinarian for complete information about this product and how it fits into your pet's individual treatment plan.

Last revised: 5/28/2025

Description
Product details
Tobramycin Ophthalmic Solution is an aminoglycoside antibiotic medication used to treat susceptible bacterial infections of the eyes. This product is an eye drop/solution.
- This sterile ophthalmic solution contains tobramycin, an antibiotic used to treat susceptible bacterial infections of the eye surface in cats, dogs, and horses.
- Antibiotic only- this product does not contain any steroid ingredients.
- Use with caution in animals with preexisting kidney impairment.
- May be prescribed for other animal species; please consult your veterinarian.
- While this drug does not have an FDA-approved indication for all animal uses, it is commonly accepted for veterinarians to prescribe this medication for use in animals.
This product contains a chemical on the Prop 65 List.

*Please note: this is a generic medication. Product packaging and appearance, including size, color, and shape, may differ from the description or images provided and are subject to manufacturer availability.

Sourced directly from the manufacturer or their approved distributor. Guaranteed genuine product backed by the manufacturer.

For
Dogs, Cats, and Horses

Active ingredient(s)
Tobramycin (0.3%)

Common brand names
Tobrex

Drug class
Aminoglycoside antibiotic, Ophthalmic

Product strength & size
This sterile ophthalmic solution contains 3 mg of tobramycin per 1 mL of solution. Please ensure the selected product is appropriate for your pet, as recommended by your veterinarian.
For current availability, please refer to the product selection above.

Usage
Tobramycin Ophthalmic Solution should be applied as directed by your veterinarian. Please consult your veterinarian before making any changes or discontinuing the prescribed dosing schedule.

For general ophthalmic use:
Wash your hands thoroughly with soap and water before and after application.
Pull your pet’s lower eyelid down gently, then apply the prescribed number of drops into the pocket between the eyelid and the eyeball.
Do NOT allow the tip of the tube to touch any surface, including your hands or your pet’s face and eyes, as this will contaminate the sterile surface.
If using multiple eye medications or products, separate dosing by at least 5 minutes. Eye drops should be used before eye ointments to allow for proper absorption.

Complete the entire course of treatment as prescribed, even if your pet's condition has improved. Failure to complete the entire course of treatment may cause recurrence or worsening of the infection. Contact your veterinarian ahead of time if your pet needs a refill.

Missed doses
Administer the dose as soon as possible. If it is almost time for the next dose, skip the missed dose and continue with the regular schedule. Do not apply two doses at once.

Storage
Store in a cool, dry place at a controlled temperature between 36°F and 77°F. Avoid excessive heat. Keep tightly closed when not in use and out of the reach of children and pets. Store away from heat and direct sunlight. Do not store in the bathroom, near the kitchen sink, or in damp places. The medicine may break down if exposed to heat or moisture.

Side effects
Possible side effects may include (but are not limited to): mild redness, burning, stinging, or itching of the eye/eyelid(s), temporary blurred vision, and/or squinting after application.
Topical ophthalmic medications are not typically absorbed systemically, though this may still occur in some animals (especially cats). Contact your veterinarian immediately if you observe any signs of systemic toxicity, including excessive thirst or urination, dizziness/loss of balance, and impaired hearing.

Notify your veterinarian if your pet experiences any of the effects described above, or if you notice any other side effects that are persistent or troublesome.
If you notice anything unusual, please consult your veterinarian.

Precautions
Do NOT use this medication if the solution changes in appearance (e.g., color, cloudiness, presence of visible particles, etc). These may be signs that the product is contaminated and no longer fit for use.
This product should only be used for bacterial eye infections. Do NOT use this medication in animals with fungal or viral eye infections.
Use with caution in animals with preexisting kidney impairment. Safe use of this medication has not been established in breeding, pregnant, or lactating animals.
Do NOT touch the tip of the tube with your hands or allow the tip to touch any surface, including your pet’s eyes. Contact with any surface may contaminate the product.
Contact your veterinarian if your pet’s condition does not improve or worsens within 2 to 3 days after starting this medication.

Do not administer to animals with a known history or suspected allergy/hypersensitivity to any aminoglycoside antibiotics, including this medication or any of its ingredients. Allergic reactions to medications may occur. Be sure to inform Vetsource and your veterinarian if your pet has any known drug sensitivities or allergies.
If your pet displays symptoms of an allergic reaction, discontinue therapy and call your veterinarian immediately or seek emergency veterinary attention. Symptoms may include (but are not limited to): swollen lips, tongue, face, or airways, difficulty breathing, agitation, profuse salivation, and widespread hives or itching.

Drug and food interactions
Ophthalmic medications are applied topically to the eyes and are not absorbed into the body in the same manner as oral or injectable medications. Because of this, there is limited drug interaction information for these medications; however, interactions may still be possible.
Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.

Please ensure your veterinarian is aware of all medications and supplements that your pet is currently receiving. Your veterinarian may prescribe multiple medications, even if a potential drug interaction may occur. In these instances, your veterinarian may adjust the dosages or monitor your pet more closely.

Adverse reactions
If you are concerned that your pet has experienced an adverse reaction to this medication, please contact Vetsource Pet Owner Care at 877-738-4443.

Overdose
If you have any reason to suspect an overdose, call your doctor/veterinarian or the appropriate poison control resource immediately.

For humans:
The national toll-free Poison Help line, 1-800-222-1222, will connect you to your local poison center in case of emergency. This service is available nationwide and in most U.S. territories.

For animals:
The ASPCA Animal Poison Control Center is available 24 hours a day, 365 days a year at 888-426-4435.
Pet Poison Helpline® also provides a 24/7 animal poison control service at 855-764-7661.

*Please note: this information is for third-party services and is provided for convenience in case of potential poison-related emergencies. There may be consultation fee for these services.

Disclaimer
The content provided on this page is NOT medical advice.
All content, including the images and product description above, is intended for general informational purposes only and should not be considered a substitute for professional veterinary consultation, diagnosis, or treatment.
Consult your veterinarian for complete information about this product and how it fits into your pet's individual treatment plan.

Last revised: 5/28/2025
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