Although Viagra is effective for most guys with EDit’s important to make sure you’re taking the right dose. Too low of a Viagra dosage and your arousals may not be as firm or reliable as they could be ...

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 ...

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