Trimethoprim-Sulfamethoxazole for Ferret
Pocket Pet · Mustela putorius furo · typical adult weight 0.60–2.00 kg
Trimethoprim-Sulfamethoxazole is used in ferret for UTI / chronic skin. Routes documented in ferret: PO. A typical adult ferret weighs 0.60–2.00 kg. ExoticRx lists 1 cited dose rule for Trimethoprim-Sulfamethoxazole in ferret, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Bactrim, TMS
Dose ranges
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 30 mg/kg | q12h | UTI / chronic skin | Moderate | ExoticRx 2026 (ferret dosing guide) |
Need the exact dose for your patient?
These ranges are per kg. Enter your ferret's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Mechanism of action
Sequential blockade of folate synthesis: sulfamethoxazole inhibits dihydropteroate synthase; trimethoprim inhibits dihydrofolate reductase.
Side effects & warnings
May cause keratoconjunctivitis sicca (KCS) in dogs with prolonged use. Can cause bone marrow suppression. Avoid in animals with hepatic disease. Adequate hydration required.
Species-specific contraindications and adverse-reaction reports for ferret may differ from canine / feline reference data — consult the primary citations listed with each rule.
Other Antibiotic drugs with ferret dosing
Trimethoprim-Sulfamethoxazole dosing in other species
Why a species-specific page? Trimethoprim-Sulfamethoxazole pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in ferret — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.