How Long Does Cialis Last?

How long does Cialis last? In most people, Cialis lasts for about 36 hours. There are a number of factors that can increase or decrease how long Cialis lasts. Some factors that increase the amount of time Cialis stays in the body include severe kidney disease and certain medicines.

How Long Does Cialis Last?

Many people considering taking Cialis® (tadalafil) wonder, "How long does Cialis last?" The answer depends on a number of factors and will vary between individuals. However, in most people, Cialis will last for about 36 hours.
 
In previous research studies, the effects of Cialis were measured by comparing people who took Cialis to people who took a sugar pill. These studies measured the percentage of successful intercourse attempts at 24 hours and 36 hours for people taking a sugar pill, Cialis 10 mg, and Cialis 20 mg.
 
At 24 hours, successful attempts were seen in:
 
  • 42 percent taking the sugar pill
  • 56 percent taking Cialis 10 mg
  • 67 percent taking Cialis 20 mg.
     
At 36 hours, successful attempts were seen in:
 
  • 33 percent taking the sugar pill
  • 56 percent taking Cialis 10 mg
  • 62 percent taking Cialis 20 mg.
     
The time it takes for Cialis to start working will also vary depending on the individual. In clinical studies, Cialis began to work in as little as 30 minutes. For most people, though, it begins working within one hour.
 

Factors Affecting How Long Cialis Will Last

There are a number of factors that can increase or decrease how long Cialis lasts. Some factors that increase the amount of time Cialis stays in the body include severe kidney disease or liver disease (such as cirrhosis) and certain other medicines (see Cialis Drug Interactions).
 
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