Sourced from published veterinary references. Awaiting credentialed clinical reviewer — our editorial process.
Dexamethasone is dosed at 2 mg/kg IM, IV not stated in source in ferrets, per Greenacre CB. Incidence of adverse events in ferrets vaccinated with distemper or rabies vaccine: 143 cases (1995-2001). J Am Vet Med Assoc. 2003;223:663-665. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.955 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.10 (Miscellaneous Agents Used in Ferrets.a). — CORROBORATED 2026-08-06 by independent literature: A ferret model of immunosuppression induced with dexamethasone. (Veterinary immunology and immunopathology, 2022). The paper reports this drug at this dose in this species: "cases, immunosuppression of experimental animals is necessary. The aim of this study was to […]". This is a second source alongside the book already cited; it corroborates the figure and does not by itself establish that the dose is correct. Verify against current literature before clinical use.
Acute allergic reactionallergic reactionsAnaphylactic reaction to vaccineAnti-inflammatory (glucocorticoid)Anti-inflammatory (when PO/IM/IV not feasible)Antiinflammatoryextra-labelfeline asthma exacerbationGlucocorticoidHyperthermiaIMHA (immune-mediated hemolytic anemia)immune-mediated disease
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InflammationInflammatory conditionsketosisLaryngeal or pharyngeal edema and inflammationLaryngeal or pharyngeal oedema and inflammationLow-dose dexamethasone suppression test (diagnostic)parturition inductionrecurrent airway obstruction
Mechanism of Action
Potent synthetic glucocorticoid. Suppresses inflammation, immune responses, and allergic reactions. 25-30x potency of cortisol.
Side effects & warnings
Immunosuppressive. PU/PD, polyphagia. Avoid in active infections without antibiotic coverage. Prolonged use causes iatrogenic hyperadrenocorticism. Avoid in reptiles if possible (severe immunosuppression).
Species with Dexamethasone dosing data (37 dose rules)
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
Sample dosing (2 of 37 cited rules)
A dog/cat sample is shown here. Cited dosing for all 27 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.
Plumb's 10th ed printed p.361, Dexamethasone monograph spanning p.361-366.Compilation only — we have not located an independent source that prints this figure.
Plumb's 10th ed printed p.361, Dexamethasone monograph spanning p.361-366.Compilation only — we have not located an independent source that prints this figure.
· 130. Morrisey JK, Carpenter JW. Formulary. In: Quesenberry KE, Carpenter JW, eds. 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.796
· 243. Klaphake E, Gibbons PM, Sladky KK, et al. Reptiles. In: Carpenter JW, eds. Exotic Animal Formulary, 5th ed., Elsevier, St. Louis, MO; 2018:81-166. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.260 — Carpenter's Exotic Animal Formulary 6th ed, Table 4.8 (Hormones and Steroids Used in Reptiles).
· 29. Isenbügel E, Baumgartner R. Diseases of the hedgehog. In: Fowler M, eds. Zoo and Wild Animal Medicine: Current Therapy, 3rd ed., WB Saunders, Philadelphia, PA; 1993:294-302. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.742 — Carpenter's Exotic Animal Formulary 6th ed, Table 8.6 (Analgesic/Antiinflammatory Agents Used in Hedgehogs).
· 297. Schumacher J. Respiratory medicine of reptiles. Vet Clin North Am Exot Anim Pract. 2011;14:207-224. — Source: Mader's Reptile and Amphibian Medicine and Surgery, 3rd Ed, p.1415
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66. Harkness JE. A Practitioner's Guide to Domestic Rodents, American Animal Hospital Association, Lakewood, CO; 1993. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.799 — Carpenter's Exotic Animal Formulary 6th ed, Table 9.7 (Miscellaneous Agents Used in Rodents).
· Greenacre CB. Incidence of adverse events in ferrets vaccinated with distemper or rabies vaccine: 143 cases (1995-2001). J Am Vet Med Assoc. 2003;223:663-665. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.955 — Carpenter's Exotic Animal Formulary 6th ed, Table 11.10 (Miscellaneous Agents Used in Ferrets.a). — CORROBORATED 2026-08-06 by independent literature: A ferret model of immunosuppression induced with dexamethasone. (Veterinary immunology and immunopathology, 2022). doi:10.1016/j.vetimm.2021.110362. https://doi.org/10.1016/j.vetimm.2021.110362. The paper reports this drug at this dose in this species: "cases, immunosuppression of experimental animals is necessary. The aim of this study was to […]". This is a second source alongside the book already cited; it corroborates the figure and does not by itself establish that the dose is correct.
· Jepson L. Turtles and tortoises. In: Exotic Animal Medicine: A Quick Reference Guide, Saunders/Elsevier, Philadelphia, PA; 2009:358-411. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.260 — Carpenter's Exotic Animal Formulary 6th ed, Table 4.8 (Hormones and Steroids Used in Reptiles).