ExoticRx · exoticrx.com/drugs/sildenafil
Viagra, Revatio
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.
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
Free-tier preview — dog and cat dosing. Pro and Student unlock all 1 species including reptiles, birds, pocket pets, livestock, and equine.
| Species | Route | Dose | Frequency | Evidence | Source |
|---|---|---|---|---|---|
| Dog (Domestic) | PO | 1–3 mg/kg | q8-12h | Moderate | Plumb's Veterinary Drug Handbook, 9th Ed |
Upgrade to Pro or Student to access full drug details including mechanism of action, warnings, dose ranges, and frequency.
View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.