Viagra lasts for about four hours, but it can last longer in some people. Viagra should be taken 30 minutes to an hour before sexual activity. Older age or certain drugs can make Viagra stay in your ...

Holly has a degree in Medical Biochemistry from the University of Leicester. Her scientific interests include genomics, personalized medicine, and bioethics.View full profile Holly has a degree in ...

Cialis lasts up to 36 hours, making it a long-acting option. Viagra works faster, with effects in 30 minutes, but lasts only about four hours. Cialis is also approved for treating an enlarged prostate ...

Although Cialis and Viagra both make it easier to get and maintain pleasure, there are a few key differences between these two ED medications that may make one a better choice than the other for you ...