Bacterial Infections in Ferrets

Pocket Pet · Mustela putorius furo · typical adult weight 0.60–2.00 kg

16 cited drugs treat Bacterial Infections in ferrets: Amoxicillin, Ampicillin, Cefadroxil, Cefovecin, Cephalexin, Ciprofloxacin, Cloxacillin, Erythromycin, Gentamicin, Lincomycin, Neomycin, Oxytetracycline, Penicillin G, Sulfadimethoxine, Tetracycline, Tylosin.

General coverage of susceptible bacterial pathogens. Drug selection turns on the suspected organism's gram-stain, the patient's species (oral β-lactams unsafe in rabbits/guinea pigs), and the infection site (penetration to bone, CSF, or biliary tree).

The overview above describes Bacterial Infections across species; the citations below are the ExoticRx dose rules scoped to ferrets — a reference list, not new species-specific clinical guidance.

Amoxicillin(Amoxi-Tabs, Amoxil)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	10–20 mg/kg	q12h	Bacterial infection	Moderate	Hillyer EV, Brown SA. Ferrets. In: Birchard SJ, Sherding RG, eds. Saunders Manual of Small Animal Practice; WB Saunders, Philadelphia, PA; 1994:1317-1344. — Verified against Carpenter's Exotic Animal Formulary, 6th Ed, p.931 (2026-08-01). — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Amoxicillin dosing in Ferrets →Calculate for this ferret →

Ampicillin(Polyflex)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
SC, IM, IV	5–30 mg/kg	q8-12h	Bacterial infection (general)	Weak	Brown SA. Ferrets. In: Jenkins JR, Brown SA, eds. A Practitioner's Guide to Rabbits and Ferrets; American Animal Hospital Association, Lakewood, CO; 1993:43-111. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.931 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Ampicillin dosing in Ferrets →Calculate for this ferret →

Cefadroxil(Duricef)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	15–20 mg/kg	q12h	Bacterial infection (general)	Moderate	Brown SA. Clinical techniques in the ferret. Semin Avian Exot Pet Med. 1997;6:75-85. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.931 PMID: 41235870 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Cefadroxil dosing in Ferrets →Calculate for this ferret →

Cefovecin(Convenia)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
SC	8 mg/kg	q2-3d	Bacterial infection; long-acting cephalosporin	Moderate	Hedley J. Small Animal Formulary-Part B: Exotic Pets, 10th ed., British Small Animal Veterinary Association, Gloucester, UK; 2020. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.931 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Cefovecin dosing in Ferrets →Calculate for this ferret →

Cephalexin(Keflex)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	15–30 mg/kg	q8-12h	Bacterial infection (general)	Moderate	Morrisey JK, Carpenter JW, et al. Formulary. In: Quesenberry KE, OrcuttCJ, Mans C, et al. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed., Elsevier, St. Louis, MO; 2021:620-630. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.931 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). Located 2026-08-05: the only table covering this species in which the drug's own row prints this dose. The copy held is an ebook conversion with no printed page numbers, so the table is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery — ISBN 9780323484350, https://openlibrary.org/isbn/9780323484350

Full Cephalexin dosing in Ferrets →Calculate for this ferret →

Ciprofloxacin(Cipro, Baytril)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	10–30 mg/kg	q24h	Bacterial infection (general)	Moderate	Morrisey JK, Carpenter JW, et al. Formulary. In: Quesenberry KE, OrcuttCJ, Mans C, et al. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed., Elsevier, St. Louis, MO; 2021:620-630. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.931 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). Located 2026-08-05: the only table covering this species in which the drug's own row prints this dose. The copy held is an ebook conversion with no printed page numbers, so the table is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery — ISBN 9780323484350, https://openlibrary.org/isbn/9780323484350

Full Ciprofloxacin dosing in Ferrets →Calculate for this ferret →

Cloxacillin(Orbenin, Dry-Clox)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO, IM, IV	10 mg/kg	q6h	Bacterial infection (general)	Weak	Besch-Williford CL. Biology and medicine of the ferret. Vet Clin North Am Small Anim Pract. 1987;17:1155-1183. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.932 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Cloxacillin dosing in Ferrets →Calculate for this ferret →

Erythromycin(Erythro-100, Gallimycin)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	10 mg/kg	q6h	Bacterial infection (general)	Weak	Besch-Williford CL. Biology and medicine of the ferret. Vet Clin North Am Small Anim Pract. 1987;17:1155-1183. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.932 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Erythromycin dosing in Ferrets →Calculate for this ferret →

Gentamicin(Gentocin)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
SC, IM, IV	2–5 mg/kg	q12-24h	Bacterial infection (general)	Moderate	Brown SA. Clinical techniques in the ferret. Semin Avian Exot Pet Med. 1997;6:75-85. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.932 PMID: 41235870 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Gentamicin dosing in Ferrets →Calculate for this ferret →

Lincomycin(Lincocin)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	11 mg/kg	q8h	Bacterial infection (general)	Weak	Morrisey JK, Carpenter JW, et al. Formulary. In: Quesenberry KE, OrcuttCJ, Mans C, et al. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed., Elsevier, St. Louis, MO; 2021:620-630. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.932 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). Located 2026-08-05: the only table covering this species in which the drug's own row prints this dose. The copy held is an ebook conversion with no printed page numbers, so the table is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery — ISBN 9780323484350, https://openlibrary.org/isbn/9780323484350

Full Lincomycin dosing in Ferrets →Calculate for this ferret →

Neomycin(Biosol)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	10–20 mg/kg	q6h	Enteric bacterial infection (non-absorbed oral aminoglycoside)	Weak	Besch-Williford CL. Biology and medicine of the ferret. Vet Clin North Am Small Anim Pract. 1987;17:1155-1183. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.933 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Neomycin dosing in Ferrets →Calculate for this ferret →

Oxytetracycline(Terramycin, Liquamycin)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	20 mg/kg	q8h	Bacterial infection (general)	Moderate	Besch-Williford CL. Biology and medicine of the ferret. Vet Clin North Am Small Anim Pract. 1987;17:1155-1183. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.933 PMID: 41926234 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Oxytetracycline dosing in Ferrets →Calculate for this ferret →

Penicillin G(Pen-G, Crysticillin)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
SC, IM	40000 IU/kg	q24h	Bacterial infection (general)	Weak	Besch-Williford CL. Biology and medicine of the ferret. Vet Clin North Am Small Anim Pract. 1987;17:1155-1183. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.933 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Penicillin G dosing in Ferrets →Calculate for this ferret →

Sulfadimethoxine(Albon)

Antibiotic

Route	Dose	Frequency	Duration	Indication	Evidence	Source
PO, SC, IM	25 mg/kg	q24h	x 9-10 days (sources differ: 9 vs 10)	Bacterial infection (general)	Weak	Morrisey JK, Carpenter JW, et al. Formulary. In: Quesenberry KE, OrcuttCJ, Mans C, et al. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed., Elsevier, St. Louis, MO; 2021:620-630. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.933 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). Located 2026-08-05: the only table covering this species in which the drug's own row prints this dose. The copy held is an ebook conversion with no printed page numbers, so the table is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929; Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery — ISBN 9780323484350, https://openlibrary.org/isbn/9780323484350 [w3r2 2026-08-14] ATTRIBUTION: the regimen is printed by Carpenter 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets), row "Sulfadimethoxine 25 mg/kg PO, SC, IM q24h88" with an empty Comments cell. The NAMED PRIMARY does not print it - Ferrets Rabbits and Rodents 4th ed carries no sulfadimethoxine row in Table A.1 at all, and its only ferret entry is Table A.3, printed p.625, "50 mg/kg PO once, then 25 mg/kg q24h x 10 days". BSAVA Small Animal Formulary Part B printed p.275 prints "Ferrets: 50 mg/kg p.o. once, then 25 mg/kg p.o. q24h for 5-10 days". Both upstream texts bound the course and frame the drug as an anticoccidial, and Carpenter ferret Table 11.4 prints "Sulfadimethoxine 20-50 mg/kg PO q24h - Coccidia". UNSOURCED AT THE NAMED PRIMARY, not unsafe. COURSE BOUND ADDED 2026-08-18: the rule served 25 mg/kg q24h with no course. Three held texts print one, consistently, as the maintenance half of a loading regimen. Carpenter's Exotic Animal Formulary 6th ed corpus p.938, ferret row: "50 mg/kg PO, then 25 mg/kg q24h x 9 days". BSAVA Emergency and Critical Care corpus p.243: "Sulfadimethoxine: 50 mg/kg PO, then 25 mg/kg PO q24h x 9d". Ferret and Rabbit Reference corpus p.637, ferret column: "50 mg/kg PO once, then 25 mg/kg q24h x 10 days".

Full Sulfadimethoxine dosing in Ferrets →Calculate for this ferret →

Tetracycline(Panmycin)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO	20–25 mg/kg	q8-12h	Bacterial infection (general)	Moderate	Besch-Williford CL. Biology and medicine of the ferret. Vet Clin North Am Small Anim Pract. 1987;17:1155-1183. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.933 PMID: 41926234 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Tetracycline dosing in Ferrets →Calculate for this ferret →

Tylosin(Tylan)

Antibiotic

Route	Dose	Frequency	Indication	Evidence	Source
PO, SC, IM, IV	5–10 mg/kg	q12h	Bacterial infection (general)	Moderate	Brown SA. Clinical techniques in the ferret. Semin Avian Exot Pet Med. 1997;6:75-85. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.934 PMID: 41235870 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.1 (Antimicrobial Agents Used in Ferrets). 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

Full Tylosin dosing in Ferrets →Calculate for this ferret →

All drugs cited for Bacterial Infections →All drugs for Ferrets →

Other conditions in Ferrets

Pain Management Renal Disease Endoparasites GI Ulceration Sedation Systemic Fungal Infections Anaerobic Infections Coccidiosis

Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice. Verify against current literature before clinical use.