Inhibits bacterial dihydropteroate synthase (folate synthesis pathway), acting as a competitive PABA antagonist. Bacteriostatic. Active against common ocular pathogens including Staphylococcus, Streptococcus, E. coli, and Chlamydophila.
At a glance
Class
Ophthalmic Sulfonamide Antibiotic
Storage
Store at room temperature; discard if darkened
Dosing
Used for bacterial conjunctivitis and blepharitis
Useful for feline conjunctivitis including Chlamydophila (topical adjunct — syst
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 →Safety
Clinical response at 5–7 daysAllergic reaction signs
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.
FAQs
Frequently asked questions
›What is Sulfacetamide Ophthalmic?
Sulfacetamide Ophthalmic is a ophthalmic sulfonamide antibiotic used in pets. Inhibits bacterial dihydropteroate synthase (folate synthesis pathway), acting as a competitive PABA antagonist. Bacteriostatic. Active against common ocular pathogens including Staphylococcus, Streptococcus, E. coli, and Chlamydophila.
›What is Sulfacetamide Ophthalmic used for in pets?
Sulfacetamide Ophthalmic is used in veterinary medicine for: Used for bacterial conjunctivitis and blepharitis; Useful for feline conjunctivitis including Chlamydophila (topical adjunct — syst.
›What is the Sulfacetamide Ophthalmic dose for dogs?
For dogs, Sulfacetamide Ophthalmic is typically dosed as follows — Used for bacterial conjunctivitis and blepharitis: undefined undefined Ophthalmic q4–8h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the Sulfacetamide Ophthalmic dose for cats?
For cats, Sulfacetamide Ophthalmic is typically dosed as follows — Useful for feline conjunctivitis including Chlamydophila (topical adjunct — syst: undefined undefined Ophthalmic q4–8h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›Does Sulfacetamide Ophthalmic need a prescription?
Yes. Sulfacetamide 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