ABOUT PFIZER'S VIAGRA
Viagra is so widespread and well-known medicine that even those men who have not experienced erectile dysfunction, know about its miraculous effect. This medication was firstly invented by the pharmaceutical corporation Pfizer. But it was supposed to treat the problems of psychological character and some heart diseases. The main active ingredient of Viagra - Sildenafil Citrate, which is the chemical name of the medication, failed the tests and showed the low efficiency in the treatment of cardiac diseases. But later, the inventors found out that Sildenafil is capable to stimulate the stable erection in men who suffer from different sexual disorders.
This so called “mistake” brought the great success to the company. Viagra became one of the most popular medications within several months of its creation. The privilege to be the only one company which manufactures and exports Viagra all around the world was very profitable, as company gained not only success but also the great income. Nowadays, Viagra generic medications are available in every local store. Their price is cheap but the efficiency is still very high. There are several kinds of active ingredients which possess the different efficiency. Sildenafil provides the stable erection up to 6 hours; Generic Levitra is active in the male organism 12 hours and Tadalafil possesses the highest efficiency – up to 36 hours. Another active ingredient is Dapoxetine, which is the only one component capable to treat premature ejaculation.
The dosage of Viagra should be established by a specialist who must examine the health state of a patient and prescribe the appropriate dose. The hypersensitivity to Sildenafil Citrate is the rare phenomenon, but in such case one should not take Viagra in any circumstances(more information about Sildenafil is represented on specific websites). Viagra side effects are common to all Viagra generic drugs. They are: headache, dizziness, flushing of the face. But such serious side effects as: back pain, painful erection which lasts more than 4 hours or sudden loss of vision demand immediate medical treatment.
There are also certain contraindications of Viagra. One is prohibited to take the medicine with other drugs for male impotence treatment or with drugs which contain nitrate elements. The intake of alcohol may slow down the efficiency of Sildenafil. You can also use generic viagra 120mg and save your money.