Viagra patents generic?

Short answer: Yes. The patents that covered Viagra’s active ingredient (sildenafil citrate) have expired in many places, and generic sildenafil tablets are widely available. Pfizer still sells Viagra brand in some markets, but there are now many generic options that are typically cheaper.

What this means:
- In many major markets (e.g., US, EU), the main compound patent on sildenafil citrate expired around 2012–2013, so generic manufacturers can sell sildenafil tablets.
- Some countries may still have active patents or data protections for specific formulations, dosing forms, or uses, so brand Viagra can remain available or be protected longer there.
- The PAH drug Revatio is a different product (same active ingredient, different use) and may have its own patent status separate from ED uses.

If you want, tell me your country (and whether you’re asking about ED use specifically). I can give a country-specific snapshot of current patent status and what generics are available. Also, I can help with safety notes (e.g., interactions with nitrates) and how to verify a generic’s quality.