Viagra Cialis Levitra Comparison

Viagra has been invented to treat different illness than erectile dysfunction. In 1990's it was meant to prevent and treat a kind of heart disease - angina pectoralis where it appeared to be not effective but such a side effect as prolonged erection turned out to be significant for the future of the product so important for the erectile function market. After that several other pharmaceutical companies worked on the erectile dysfunction and added several chemical compounds in order to be more effective. Levitra was the second one to be introduced to the market, Cialis - the third. Every next one turned out to be more effective and last for longer period of time. So, the trio Viagra Cialis Levitra is in the class called PDE-5 inhibitors and has been proved to be effective with 70% of men that happen to have any kind of erectile dysfunction.

In the line Viagra Cialis Levitra Cialis appeared to the market the las and consequently has more priorities over the other two. In comparison with 4 hours of maximal effect of Viagra, Cialis is claimed to have all 100 hours and due to this it was called "the weekender". Viagra Cialis Levitra drugs all have side effects which usually include headaches, facial flushing, pulmonary hypertension, nasal congestion, upset stomach, etc. Viagra Cialis Levitra line has different dosages, but the starting dosage for all men is 10 mg. Men who take 25-50 mg of Viagra suffer side effects in 3 % of cases while those who take 600-800 mg suffer from side effects in 100% cases.

The trio Viagra Cialis Levitra has equal prices but Cialis having more advantages is more preferred by men. It is possible to buy Viagra and its possible alternatives online that is why Viagra online is one of the most popular medications.