Sildenafil, the active ingredient in Viagra, is marketed under various brand names globally. This variation reflects different pharmaceutical companies’ licensing and distribution agreements in various regions.
| United States | Viagra |
| United Kingdom | Viagra, Revatio (for pulmonary arterial hypertension) |
| Canada | Viagra |
| Australia | Viagra, Silagra (generic) |
| India | Viagra, Silagra, Caverta, and many other generics |
| European Union (Examples) | Viagra, Sildenafil (generic versions vary by country) |
Note that generic versions of sildenafil exist in many regions, often with different brand names. Availability of specific brands can change. Always consult a healthcare professional or pharmacist for accurate and up-to-date information on available sildenafil products in your specific location.


