Erectile Dysfunction: What Are The Differences Between Viagra, Levitra And Cialis?

Mahshid Moghei, PhD Medically reviewed by Mahshid M. on

Viagra, Levitra and Cialis are often the first treatment tried for erectiledysfunction. For most men with erectile problems, they work well and have few side effects. All three medications improve erectile function in the same basic way, but the effects of Cialis last longer. This and a few other minor differences among these medications may make one a better choice over another for some men.

Viagra, Levitra and Cialis increase levels of nitric oxide, a chemical produced by your body during sexual stimulation that causes blood vessels in the penis to relax and open. This allows you to achieve and maintain an erection. These medications don’t automatically trigger an erection; sexual arousal is needed to start the whole process.

Which is best for you ?

Viagra, Levitra and Cialis each have a slightly different chemical make up. These minor differences affect the way they work, such as how quickly they take effect and wear off; how they interact with other medications; and side effects.

Your doctor will consider these factors when deciding if one of these medications is a good choice for you. Your doctor will also consider any other health problemsyou have and whether any of your current medications could cause problems when taken with Viagra, Levitra or Cialis.

Viagra and Levitra are taken without food no more than once a day, they should be taken 30-60 minutes before sex and last up to 4 hours. Cialis can be taken with or without food, no more than once a day. It should be taken 30minutes before sex and lasts up to 36 hours


The content on this page is for informational and educational purposes only and does not constitute professional medical advice. Patients should not use the information presented on this page for diagnosing a health-related issue or disease. Before taking any medication or supplements, patients should always consult a physician or qualified healthcare professional for medical advice or information about whether a drug is safe, appropriate or effective.