Erectile Dysfunction Medications- Cialis, Viagra And Levitra.

Until The 1990's there were no medications effective enough to treat erectile dysfunction. But nowadays with so much advancement in the medical world erectile dysfunction medications have improved a lot. In fact there are three medications that have been approved by the leading medical research agency of the United States known by the name Food and Drug Association. These drugs are Cialis, Viagra, and Levitra.

These drugs belong to the class of phosphodiesterase-5 (PDE-5) inhibitors. Almost all of them are effective against erectile dysfunction and work in the same way. But there are some differences regarding how quickly these drugs show results and also the duration of their effect.

Viagra, Levitra and Cialis basically prevent the breakdown of a chemical messenger called nitric acid. Nitric acid basically relaxes the body and opens up the blood vessels and thus the blood vessels expand and become dilated. The phosphodiesterase-5 (PDE-5) inhibitors increase the flow of blood and swell up the erectile tissues and also compress the veins. Because of this change in the mechanism the person's erection happens.

Also you need to remember that phosphodiesterase-5 (PDE-5) inhibitors alone cannot do erection. Sexual stimulation is necessary for erection. One can expect complete results of the medications only when there is sexual stimulation.

As regards the similarities and differences between Viagra, Levitra and Cialis some of them are mentioned below.

Levitra and Cialis needs a usual dosage of just 10mg whereas Viagra needs 50mg dose per day. Viagra is available in 100 mg, 50 mg, 25 mg, 20 mg tablets; Levitra in 20 mg, 10 mg, 5 mg, and 2.5 mg, tablets and Cialis in 20 mg, 10 mg and 5 mg, tablets. Almost all of the phosphodiesterase-5 (PDE-5) inhibitors can be taken without food. Viagra and Levitra should be taken 1 hour before any kind of sexual activity whereas Cialis can be taken even 30 minutes before sexual activity. You can expect effects of Viagra and Levitra up to 4 hours whereas in Cialis the effect can remain for even 36 hours.

All of the phosphodiesterase-5 (PDE-5) can be taken only once a day. Regarding the side effects all three of them have similar ones. Viagra can give you side effects like headache, indigestion, flushing, upset stomach, stuffy or running nose and diarrhea. Levitra brings along with it side effects like headache, dizziness, flushing, stuffy or runny nose, upset stomach or indigestion. Whereas Cialis also bring similar side effects like flushing, headache, indigestion, stuffy or runny nose along with muscle aches and back pain.

People who had heart attack, stroke or any kind of heart problems within the last months should avoid using these erectile dysfunction medications and discuss other options with their doctor.

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