Viagra, Cialis, Levitra, and Stendra are popular drugs for treating the symptoms of erectile dysfunction.
They all have approval from the United States Food and Drug Administration (FDA), and they have the same function, but there are some differences between them.
It is important to understand these differences in order to make the best choice about which to choose.
Viagra is the brand name for the drug sildenafil, Cialis is the brand name for tadalafil, Levitra is the brand name for vardenafil, and Stendra is the brand name for avanafil.
The drugs all work in a similar way.
They are all PDE5 inhibitors. This means they help to relax the muscles and increase blood flow to the body.
This makes it easier for blood to get into the penis, and it allows people with erectile dysfunction (ED) to experience a lasting erection during sexual activity.
The drugs act relatively quickly. Manufacturers of PDE5 inhibitors recommend taking the pill at least 30 minutes to 1 hour before sexual stimulation, but the timing depends on the drug.
How long the effect of each drug lasts is one of the key differences between them:
- Viagra is a drug that people use only when they need it. A person takes the drug 30 minutes to 1 hour before sexual activity, and the effects typically last for 3-5 hours.
- Levitra may start working faster than Viagra, but it lasts for about the same amount of time.
- The effect of a similar dose of Cialis may last up to 36 hours. For this reason, people looking for a long-lasting drug may choose Cialis.
- Depending on the dose, Stendra will be effective after 15–30 minutes, and research shows it is effective for up to 6 hours
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