It depends on what you need. Prescription medications like Cialis can last up to 30 hours, providing you with the ability to get an erection at the time you need it.

Viagra on the other hand provides you temporary erectile strength for a 4 hour period. So all in all it really depends on what you are looking for.

However; we always recommend going with an all natural penis enlargement pill, which can act as a natural alternative to Viagra and Cialis without any of the harmful side effects.