Bird · Psittacus erithacus · typical adult weight 0.40–0.65 kg
Trimethoprim is dosed at 30–50 mg/kg PO q12h in african grey parrots, per Flammer K. Treatment of bacterial and mycotic diseases of the avian gastrointestinal tract. Proc North Am Vet Conf; 2002:851-852. — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.422 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 5.1 (Antimicrobial Agents Used in Birds.a). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929. Trimethoprim is used in african grey parrots for Susceptible infections (TMP-sulfa). Routes documented in african grey parrots: PO. A typical adult african grey parrot weighs 0.40–0.65 kg. ExoticRx lists 1 cited dose rule for Trimethoprim in african grey parrots, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Tribrissen
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 30–50 mg/kg | q12h | 7-14 days | Susceptible infections (TMP-sulfa) |
| Flammer K. Treatment of bacterial and mycotic diseases of the avian gastrointestinal tract. Proc North Am Vet Conf; 2002:851-852. — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.422 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 5.1 (Antimicrobial Agents Used in Birds.a). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
The sources disagree for this combination. The ranges below do not overlap on a comparable route. This is not an error in one of them — published veterinary references differ, and reconciling them for a particular patient is a clinical judgement.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 8 | IM | BSAVA Manual of Psittacine Birds, 2nd edp.313 | 8 mg/kg i.m. q12h | If regurgitation occurs, reduce dose |
| 8–30 | IM | BSAVA Small Animal Formulary, 10th ed — Part B (Exotic Pets)p.305 | 8-30 mg/kg i.m. q12h or 20-100 mg/kg p.o. q12h |
| 20–100 | PO | BSAVA Small Animal Formulary, 10th ed — Part B (Exotic Pets)p.305 | 8-30 mg/kg i.m. q12h or 20-100 mg/kg p.o. q12h |
| 20 | SC |
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These ranges are per kg. Enter your african grey parrot's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Inhibits dihydrofolate reductase (DHFR) in folate synthesis pathway. Synergistic bactericidal activity when combined with sulfonamides.
Almost always used in combination with a sulfonamide. Folate supplementation recommended in cats and during pregnancy. KCS risk in dogs.
Species-specific contraindications and adverse-reaction reports for african grey parrots may differ from canine / feline reference data — consult the primary citations listed with each rule.
Trimethoprim dose range in african grey parrots, with cited source references: PO 30–50 mg/kg q12h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Trimethoprim in african grey parrots: PO.
Cited course lengths for Trimethoprim in african grey parrots include: 7-14 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Trimethoprim is indicated in african grey parrots for: Susceptible infections (TMP-sulfa).
These are general warnings for Trimethoprim across species; consult the african grey parrot dosing table above for species-specific guidance. Almost always used in combination with a sulfonamide. Folate supplementation recommended in cats and during pregnancy. KCS risk in dogs.
Why a species-specific page? Trimethoprim pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in african grey parrots — 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.
| Carpenter's Exotic Animal Formulary, 6th edTable 5.1 |
| 20 mg/kg SC, IM q12h |
| 30 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.4 | 30 mg/kg PO q8-12h,420 |
| 8 | IM | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 8 mg/kg IM q12h |
| 20 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 20 mg/kg PO q8- 12h |
| 40–50 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 40-50 mg/kg PO q12h |
| 60–72 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 60-72 mg/kg PO q12h 75 mg/kg IM q12h Mos |
| 75 | IM | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 60-72 mg/kg PO q12h 75 mg/kg IM q12h Mos |
| 100 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 100 mg/kg PO q12h |
| 144 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 144 mg/kg PO q8- 12h |
| 5 | IM | Carpenter's Exotic Animal Formulary, 6th edTable 5.4 | 5 mg/kg IM q12h |
| 30–100 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.4 | 30-100 mg/kg PO q12h × 7 days |
| 10–20 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 10-20 mg/kg PO q8h,240,585 |
| 8 | SC | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 8 mg/kg SC, IM q12h |
| 16–24 | PO | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 16-24 mg/kg PO q8- 12h |
| Dose (mg/l) | Route | Source | As printed |
|---|---|---|---|
| 360–400 | — | Carpenter's Exotic Animal Formulary, 6th edTable 5.1 | 360-400 mg/L drinking water × 10-14 days |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.