What is The Difference Between Cialis and Viagra?
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Viagra i.e. sildenafil and Cialis i.e. tadalafil can be effective in as little as 1 hour, though for some patients, these medicines can work more rapidly. Sildenafil will work reliably for 6–8 hours, but tadalafil will work for up to 36 hours.

Penile erection is occurred by the engorgement of the penis with blood. In normal situations, sexual stimulation leads to the creation and release of nitric oxide in the penis. Nitric oxide then energizes the enzyme, Guanylate Cyclase, which causes the production of Cyclic Guanosine Monophosphate (cGMP). It’s the cGMP that’s primarily responsible for the erection by affecting the quantity of blood that the blood vessels deliver and remove from the penis. Cialis and Viagra inhibit an enzyme known as Phosphodiesterase-5 (PDE5) which destroys the cGMP. Therefore, Cialis and Viagra stop the destruction of cGMP and allows cGMP to accumulate and persist longer. The more the cGMP persists, the longer prolonged the engorgement of the penis.

 

How Viagra and Cialis work

Viagra (Sildenafil) has been scientifically proven to improve the user’s ability to achieve and maintain an erection for a sufficient period. A study involving 4,039 patients found that the drug showed improvements in the frequency, hardness and duration of their participants’ erections. Viagra is often recommended by doctors in the UK for those suffering from ED and has also been fully approved by the NHS. 

 

Viagra vs. Cialis

In the fight of Cialis vs Viagra we can say that Cialis works longer, giving you an opportunity to get an erection any time throughout the course of 36 consecutive hours. But Cialis has one weak point as it usually takes about 2 hours for Cialis to start working in your body and give you an erection for good. Actually, Cialis was first for sale in 2003. When you put Cialis into your system, you will be able to observe that all your muscles are totally relaxed and your blood will flow directly to your penis and cause a great erection for sure. Remember that there is no chance that an erection will go away until you are properly finished.

On considering Cialis vs Viagra, we observe that Viagra only stays in your system for about 8 hours or so. Therefore Viagra brings you arousal very quickly in about 30 minutes or so, while Cialis will go into action in about 2 hours or maybe even longer.

 

Side effects of Viagra and Cialis

Frequent side effects include:

  • headache;
  • visual impairment;
  • flushes;
  • digestive tract disorders;
  • muscular pain;
  • genitourinary tract infections;
  • facial redness;
  • visual perception disorders, such as changes in color vision and blurred vision;
  • stuffiness in nose or runny nose;
  • backache;
  • nausea;
  • dizziness;
  • rashes.

Very rare side effects that you should be aware of:

  • sudden deterioration or loss of hearing;
  • sudden loss of vision – you need to seek medical help immediately;
  • erection, which persists for more than 4 hours (Priapism) – you should immediately seek medical help.



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