Generic versions of tadalafil like Actilis are just as effective as Cialis. The FDA conducts a rigorous inspection to make sure manufacturers selling generic drugs follow good manufacturing processes so their drugs can provide the same therapeutic benefits. Actilis is as safe and effective as Cialis when it comes to treating erectile dysfunction. Plus, it is the affordable generic version of Cialis. Actilis 20 mg costs you less than $1, while the branded version costs you more than $30 per pill.