Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Sildenafil is used in dog for Pulmonary hypertension. Routes documented in dog: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Sildenafil in dog, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Viagra, Revatio
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 1–3 mg/kg | q8-12h | Long-term | Pulmonary hypertension | Moderate | Plumb's Veterinary Drug Handbook, 9th Ed |
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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Inhibits phosphodiesterase-5, preventing cGMP breakdown in pulmonary vascular smooth muscle, causing pulmonary vasodilation.
Used for pulmonary hypertension in dogs. Hypotension possible. CONTRAINDICATED with nitrates. Monitor systemic blood pressure. Give with or without food.
Species-specific contraindications and adverse-reaction reports for dog may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? Sildenafil pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dog — 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.