Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Tamsulosin is dosed at 0.1–0.5 mg per dog PO q24h in dogs, per Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Plumb's 10th ed (held) printed p.1205, Tamsulosin monograph spanning p.1205-1206; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207. Tamsulosin is used in dogs for Ureteral stone passage facilitation. Routes documented in dogs: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Tamsulosin in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Flomax
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 0.1–0.5 mg per dog | q24h | Variable | Ureteral stone passage facilitation | Weak | Plumb's Veterinary Drug Handbook, 10th ed (2023, held copy; the original seed cited the 9th, which was never consulted) — Plumb's 10th ed (held) printed p.1205, Tamsulosin monograph spanning p.1205-1206; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
| Dose (mcg/kg) | Route | Source | As printed |
|---|---|---|---|
| 10 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.407 | 10 μg (micrograms)/kg p.o. q24h (up to 0.4 mg/dog q24h), can increase to q12h if necessary. Capsules should no |
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.
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Selective alpha-1A adrenergic antagonist targeting receptors in prostate and bladder neck smooth muscle. Uroselective with less vascular effects.
Limited veterinary data. More uroselective than prazosin (less hypotension). May facilitate ureteral stone passage. GI upset possible.
Species-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Tamsulosin dose range in dogs, with cited source references: PO 0.1–0.5 mg per dog q24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Tamsulosin in dogs: PO.
Cited course lengths for Tamsulosin in dogs include: Variable. Duration depends on the indication — match it to the specific dose rule in the table above.
Tamsulosin is indicated in dogs for: Ureteral stone passage facilitation.
These are general warnings for Tamsulosin across species; consult the dog dosing table above for species-specific guidance. Limited veterinary data. More uroselective than prazosin (less hypotension). May facilitate ureteral stone passage. GI upset possible.
Why a species-specific page? Tamsulosin pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dogs — 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.