Why is Sildenafil cheaper than Viagra?

Viagra and Sildenafil, both have the same active ingredient (Sildenafil) and are equally effective.

Sildenafil is the generic unbranded version of Viagra. Viagra was the brand name used by Pfizer: the first company to license the treatment Sildenafil (a process which costs pharmaceutical companies a significant amount).

Once the Viagra patent expired, other manufacturers could make it at a lower cost. This is a good thing for you, as now you can get a cheaper medication which is just as effective.