Pocket Pet · Mustela putorius furo · typical adult weight 0.60–2.00 kg
Finasteride is dosed at 5 mg/kg PO q24h in ferrets, per Rosenthal K. Endocrine disorders of ferrets: insulinoma and adrenal gland disease. Annu Waltham/OSU Symp Treat Small Anim Dis: Exotics Proc 21st; 1997:35-38. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.949 (2026-08-01, PENDING REVIEW). Finasteride is used in ferrets for Adrenal disease; prostatic enlargement. Routes documented in ferrets: PO. A typical adult ferret weighs 0.60–2.00 kg. ExoticRx lists 1 cited dose rule for Finasteride in ferrets, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Proscar, Propecia
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 5 mg/kg | q24h | Adrenal disease; prostatic enlargement | Weak | Rosenthal K. Endocrine disorders of ferrets: insulinoma and adrenal gland disease. Annu Waltham/OSU Symp Treat Small Anim Dis: Exotics Proc 21st; 1997:35-38. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.949 (2026-08-01, PENDING REVIEW) |
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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.
Inhibits 5-alpha reductase type II, blocking conversion of testosterone to dihydrotestosterone (DHT). Reduces prostate size.
Used for benign prostatic hyperplasia in dogs. Teratogenic — do not handle crushed tablets during pregnancy. Effects take weeks. Does not affect libido.
Species-specific contraindications and adverse-reaction reports for ferrets may differ from canine / feline reference data — consult the primary citations listed with each rule.
Finasteride dose range in ferrets, with cited source references: PO 5 mg/kg q24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Finasteride in ferrets: PO.
Finasteride is indicated in ferrets for: Adrenal disease; prostatic enlargement.
These are general warnings for Finasteride across species; consult the ferret dosing table above for species-specific guidance. Used for benign prostatic hyperplasia in dogs. Teratogenic — do not handle crushed tablets during pregnancy. Effects take weeks. Does not affect libido.
Why a species-specific page? Finasteride pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in ferrets — 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.