Like other prescription medicines, Viagra and its generic form, sildenafil, work best when you take them under the right conditions. From your mental state to your eating habits, a range of factors ...

This article was reviewed by Lynn Marie Morski, MD, JD. Brand name Viagra (AKA sildenafil citrate) has earned a reputation as the go-to fix for intimate challenges — especially ED. So, people often ...

Medically reviewed by Matthew Wosnitzer, MD Key Takeaways Viagra lasts for about four hours, but it can last longer in some ...