Cialis and Viagra – history of invention.

Oddly enough, but 비아그라 구입 appeared by chance. In the late 90-ies of the last century, the US company Pfizer engaged in the invention of the angina treatment drug. However, clinical trials have shown that the main drug substance sildenafil was useless. However, experimental subjects enthusiastically argued on the pleasant side effect, namely a potency improvement. Managers understood that the drug still will earn much money to the company.

The merger of two words“Vigor” and “Niagara Falls” gave the name of the new miraculous medication.Complex and long tests confirmed the unusual properties of 비아그라. Efficacy and safety of the pills dealing with erectile dysfunction were proven and the release of the drug was authorized by the US Drug Control Department in 1998.

The history of Cialis invention is less interesting. The medicine development had been carried out deliberately since 1993. After several years of clinical studies, the pills were allowed to be sold in 2002.

cialis versus 비아그라 구매 despite the fact that different companies worked on the drug development, the mechanism of action is very similar. And it’s quite simple: medications slow down the action of enzyme phosphodiesterase 5, which affects adversely the substance responsible for the nerve impulses transmission to the penis. It increases the amount of blood flow to the corpus cavernosum penis, which leads to a natural good erection. It makes it possible to sexual contact and prolongs its duration.

Nowadays they are successfully used as a possible treatment for erectile dysfunction and a relief of symptoms of ED.

Cialis vs Viagra – are there really any differences?

The question is very important. Let us show you all the Cialis and Viagra dissimilarities in the following list. These comparative characteristics of Viagra vs Cialis need to learn to make the right choice:

Actual substance:

Cialis: Tadalafil;

Viagra: Sildenafil.

Adjusted dosage:

– Cialis: 20mg

– Viagra: 100mg

Maximum daily dosage:

– Cialis: 40mg

– Viagra: 200mg

The onset of action:

– Cialis: in 15-20 minutes;

– Viagra: in 45-50 minutes.

    Effective drug duration:

– Cialis: 36 hours;

– Viagra: 4 hours.

Effect:

Cialis: enhanced erection during sex; drug shows its effectiveness only after a thorough sexual stimulation of erogenic zones;

Viagra: strong erection before sex.

 

Simultaneous usage together with alcohol:

Cialis: you can take Cialis not less than 15 minutes before drinking alcohol;

Viagra: It is possible to take not less than 1 hour before drinking alcohol.

 

Contraindications:

Cialis:

hepatic failure, nephatony, amphiboles degenerative disease, anatomical penis deflections, Tadalafil Hyperresponsiveness.

Viagra: leukemia, vascular heart disease, sickle-cell disease, pancreatic diabetes, anatomic penis deflections, Sildenafil hyperresponsiveness.

 

Side effects:

Cialis: a headache, stomachache, face reddening, faintness, flatulence;

Viagra: a headache, stomachache, face reddening.

As you see, the mechanism of actions of both medications is the same, contraindications and side effects are also very similar. The only things they differ from each other are onset of action and effective drug duration. Of course, mean values are pointed here. It is worth remembering that each person body is unique that’s why different people may react to the same medication differently.