Livestock · Gallus gallus domesticus · typical adult weight 0.50–5.00 kg
Trimethoprim-Sulfamethoxazole is dosed at 50 mg/kg PO q12h in chickens, per Greenacre, C.B., Luna, G.L., and Morishita, T.M. (2018). Backyard poultry and waterfowl. In: Exotic Animal Formulary, 5e (ed. J.W. Carpenter), 377-432. St. Louis, Missouri: Elsevier. — Source: Greenacre & Morishita, Backyard Poultry Medicine and Surgery, 2nd Ed, p.589 — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Backyard Poultry Medicine and Surgery — ISBN 9781119511755, https://openlibrary.org/isbn/9781119511755. Trimethoprim-Sulfamethoxazole is used in chickens for Antibacterial / anticoccidial. Routes documented in chickens: PO. A typical adult chicken weighs 0.50–5.00 kg. ExoticRx lists 1 cited dose rule for Trimethoprim-Sulfamethoxazole in chickens, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Bactrim, TMS
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 50 mg/kg | q12h | Antibacterial / anticoccidial | Moderate | Greenacre, C.B., Luna, G.L., and Morishita, T.M. (2018). Backyard poultry and waterfowl. In: Exotic Animal Formulary, 5e (ed. J.W. Carpenter), 377-432. St. Louis, Missouri: Elsevier. — Source: Greenacre & Morishita, Backyard Poultry Medicine and Surgery, 2nd Ed, p.589 — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Backyard Poultry Medicine and Surgery — ISBN 9781119511755, https://openlibrary.org/isbn/9781119511755 |
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These ranges are per kg. Enter your chicken's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Sequential blockade of folate synthesis: sulfamethoxazole inhibits dihydropteroate synthase; trimethoprim inhibits dihydrofolate reductase.
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 chickens may differ from canine / feline reference data — consult the primary citations listed with each rule.
Trimethoprim-Sulfamethoxazole dose range in chickens, with cited source references: PO 50 mg/kg q12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Trimethoprim-Sulfamethoxazole in chickens: PO.
Trimethoprim-Sulfamethoxazole is indicated in chickens for: Antibacterial / anticoccidial.
These are general warnings for Trimethoprim-Sulfamethoxazole across species; consult the chicken dosing table above for species-specific guidance. May cause keratoconjunctivitis sicca (KCS) in dogs with prolonged use. Can cause bone marrow suppression. Avoid in animals with hepatic disease. Adequate hydration required.
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 chickens — 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.