The ratio of different types of diseases has increased as compare to the past. The main reason of increasing health and fitness problems is the carelessness and wrong attitude of the people towards these diseases. It is very important for you to talk your doctor about these health problems because they may cause other bad effects on your health. Doctor is the only man who has the experience to guide you in a right way.
Now let us talk about the Viagra. Viagra, which is also called as Sildenafil citrate in the market, is use for the treatment of erectile dysfunction. It is also use for the treatment of the pulmonary arterial hypertension. In erectile dysfunction or ED man losses his erection, which is necessary for the sex. When the man uses Viagra, the flow of blood through the arteries becomes increase. This thing makes the penis stiff and erect and makes him able to enjoy the real sex. If we talk about the working of Viagra then you will come to know that it actually work on an enzyme known as specific phosphodiesterase. This enzyme actually regulates the blood flow throughout the body specifically in penis.
Viagra was the major medicine use for the treatment of the erectile dysfunction before 1998. But after this year some other medicines were also introduced in the market by different pharmaceutical companies. In these medicines levitra and Cialis are very common. Cialis and levitra are available in the market as tadalafil and vardenafil respectively.
As we early discussed about its medical use i.e. erectile dysfunction. We can define erectile dysfunction in other words i.e. it is the inability of a man to sustain enough erection which is necessary for the complete sexual intercourse. If a man suffering from diabetes and high blood pressure then this medicine cannot create bad effect on his health but before use he should consult with his doctor. Now the question is this how a man becomes the victim of erectile dysfunction. The answer of this question is quite simple that is the medicines use for the treatment of the depression and mood disorder are the main reason for erectile dysfunction.
Talking about the pharmacokinetic data you will come to know that its bioavailability is only 40 percent. Half life of Viagra is 3-4 hours. It means you should provide that environment to the Viagra which is prescribed by the pharmacist. Viagra excretion is 80 percent fecal and around 13 percent renal. Viagra is available in different doses but a man who is 60 above and wants to use Viagra then doctor may start him with a low dose of 25 mg.
Nowadays, many young people use Viagra to increase the erection time of their penis in sexual intercourse. They think that they can enjoy a good sex with their partner if their penis can remain stiff and erect for a long time. At the last I want to suggest you that always use Viagra and other medicines like this under the care of your doctor.