Cialis is becoming the first choice for Italian men in search of a remedy for erectile dysfunction, with the proven durability of the product up to 36 hours after ingestion, and queso also called the weekend pill. The tablet of Cialis 10mg or 20mg must be ingested half an hour before sex, not to mention the fact its effectiveness for 36 hours, then completely avoiding taking other tablets during the same period of time, as it should be to make any additional benefit.