Do I need a prescription for Tadalafil? You can browse your medication and discover the difference between your product and Cialis. How do you take tadalafil? These factors may affect how you should use Cialis Tadalafil. These drugs also have to be specially labeled, so many online pharmacy companies have already elected not to deliver them. It is also one of the biggest obstacles when dealing with erectile dysfunction.tadalafil or cialis Savings, Coupons and Information. | TADALAFIL (tah DA la fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which helps to maintain an erection. We have good news for you: generic Cialis, used to treat erectile dysfunction (ED)and enlarged prostates, just hit pharmacies. Prices for the generic, known as tadalafil, are more than 50% less than those of brand-name Cialis. As more men are able to afford tadalafil and treat their ED, it’s likely that many will have questions. Both treatment options are available in doses of 5, 10, and 20 mg. The costs are: Cialis: A prescription of 30 Cialis pills costs $ Tadalafil: 30 tadalafil pills are available for $