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Gentamicin Ophthalmic

Prescription
Ophthalmic Aminoglycoside Antibiotic
Last reviewed 22 Apr 2026 · PetCare.AI Editorial Team
Species
Dog, Cat
Brands
2 available
Formulations
3

Mechanism of action

Bactericidal aminoglycoside that binds 30S ribosomal subunit. Concentration-dependent killing with significant post-antibiotic effect. Excellent gram-negative activity including Pseudomonas. No systemic nephro/ototoxicity from topical use.

At a glance

Class
Ophthalmic Aminoglycoside Antibiotic
Schedule
Prescription
Storage
Store at room temperature; fortified solution refrigerated, use within 7–14 days

Dosing

🐕

Dog

Used for bacterial conjunctivitis, corneal ulcers (especially Pseudomonas — fort
Dose
Route
Ophthalmic
Frequency
q1–8h depending on severity
🐈

Cat

Same as dogs
Dose
Route
Ophthalmic
Frequency
q4–6h
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

Formulations

💊

Other — 3

Strength
Strength
Strength

Storage

Store at room temperature; fortified solution refrigerated, use within 7–14 days

Safety

Monitoring parameters

Clinical responseCulture and sensitivity for refractory casesCorneal epithelial health (prolonged use)
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

Interactions

No documented interactions.

Brands

Other markets

Gentak
Gentocin Ophthalmic

FAQs

Frequently asked questions

What is Gentamicin Ophthalmic?
Gentamicin Ophthalmic is a ophthalmic aminoglycoside antibiotic used in pets. Bactericidal aminoglycoside that binds 30S ribosomal subunit. Concentration-dependent killing with significant post-antibiotic effect. Excellent gram-negative activity including Pseudomonas. No systemic nephro/ototoxicity from topical use.
What is Gentamicin Ophthalmic used for in pets?
Gentamicin Ophthalmic is used in veterinary medicine for: Used for bacterial conjunctivitis, corneal ulcers (especially Pseudomonas — fort; Same as dogs.
What is the Gentamicin Ophthalmic dose for dogs?
For dogs, Gentamicin Ophthalmic is typically dosed as follows — Used for bacterial conjunctivitis, corneal ulcers (especially Pseudomonas — fort: undefined undefined Ophthalmic q1–8h depending on severity. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
What is the Gentamicin Ophthalmic dose for cats?
For cats, Gentamicin Ophthalmic is typically dosed as follows — Same as dogs: undefined undefined Ophthalmic q4–6h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
Does Gentamicin Ophthalmic need a prescription?
Yes. Gentamicin Ophthalmic is a prescription medication and should only be administered under veterinary supervision.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet. Find a vet near you →

References

References

The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.

Textbooks & handbooks — 5

  • Plumb's Veterinary Drug Handbook
  • Withrow & MacEwen's Small Animal Clinical Oncology
  • Merck Veterinary Manual
  • NRC Nutrient Requirements of Dogs and Cats
  • Veterinary Pharmacology and Therapeutics (Riviere & Papich)

Clinical guidelines & consensus — 4

  • ASPCA Animal Poison Control Center Guidelines
  • AAHA Diabetes Management Guidelines
  • ASPCA Poison Control Guidelines
  • RECOVER CPR Guidelines

Journals & peer-reviewed studies — 2

  • EPIC Study (J Vet Intern Med 2016)
  • JVIM FAT CAT Study

Regulatory & approvals — 1

  • CDSCO Veterinary Drug Approval Registry (1969–2026)

Databases — 1

  • Washington State University VCPL MDR1 Database

Related medicines

Other medicines in the same class (Ophthalmic Aminoglycoside Antibiotic).

Tobramycin Ophthalmic
Rx
Bactericidal aminoglycoside binding 30S ribosomal subunit. Excellent gram-negative spectrum including Pseudomonas. Better anti-Pseudomonal activity than gentamicin ophthalmic. TobraDex combination adds anti-inflammatory dexamethasone.
dogcat
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