In today’s progressive world it is not hidden that erectile dysfunction or ED is becoming a phenomenal problem throughout the world. It has affected millions of men across the world. Since the beginning of this world man had been tackling with numerous problems connected with sex and since then only, man had been striving to get rid of this problem somehow. The sad fact here is till 1998 nothing as such was discovered which could solve the problem in a one hundred percent effective and safe manner. This problem of ED is normally visible after the age of 60 but in many cases it can occur much before than expected. ED is normally caused when the blood flow to penile region is reduced due to some physical injury. It may also because of bad lifestyle, as a result of some mental or emotional stress, some kind of alcohol or drug addiction etc. In the past it was confidently assumed that psychological troubles are the reasons for this problem but with technical advancement in medical science it was proved that 80 to 90 percent of impotence is caused by physical problems, usually related to the blood supply of the penis. It has also become apparent that impotence can be treated at any age. In fact, the awareness of this fact is growing day by day and more men are now seeking help and returning to normal sexual activity. Then came the year 1998, a year in which the most effective and reliable anti-impotency drug viagra was launched. This was the time when overall change in the scenario and in the lives of men suffering from erectile dysfunction occurred. Viagra is also called sildenafil citrate and was approved by FDA and launched in market in March, 1998. Why it became the most popular means to treat erectile dysfunction of the time is that it was the only pill that helped in increasing the physical ability to achieve and maintain erection for sexual relief. However, it does not promised anyone from getting infected to sexually transmitted diseases including HIV. Within a very short period of time viagra became the most popular and most selling drug to treat erectile dysfunction. People started calling it ‘a wonder drug’ to treat ED. It is estimated that in the United States only, more than 5 million men have used this pill to improve their sexual life. It is cheap and can be consumed orally. The drug has been the topic of discussion since its launch in the market. ED is normally caused by reduced blood flew to the penile region. This condition may be a direct result of stress, bad lifestyle, alcohol or drug dependency, etc. Viagra causes the penile muscles to relax and increases the blood flow into the penis during sexual stimulation. The result is a harder erection, fuller penetration and sexual satisfaction for both partners during the intercourse. In other words viagra increases the body's ability to achieve and maintain an erection during sexual stimulation. But the point to be noted here again is that it can't protect you from getting sexually transmitted diseases, including HIV. This anti impotency pill viagra contains a compound sildenafil citrate, which works for viagra consumers. Clinical studies have shown that effects of viagra can be experienced in as little as 14 minutes. Initially, the treatment is started with the dose of 25 mg, which can further be increased or decreased observing the performance and the side effects of the pill. Normally it may be taken anytime from 30 minutes to 4 hours before the genuine scene. The effect of medication varies from one man to other but usually lasts for up to four hours. The effects of the medication may be slowed if viagra is taken with a large meal and alcohol. Research has proved that viagra works for most men who take it. It helps men no matter how long they have had erectile dysfunction, what caused it, or how old they are? It has helped all of them. Generally, it is advised that person above 65 years of age should be more cautious using this pill. Persons having any sort of kidney or liver problem are also treated with the smallest dose of 25 mg and it is not increased further. It is also advised to follow the physician’s instruction very strictly regarding the dosage and scheduling of this pill. However, in the healthy persons the dose can be increased to 50 mg or to 100 mg pill per day watching the effectiveness of the pill. The side effects of this pill include headache, flushing, dyspepsia, congestion, blurry vision, dizziness, and loose motions. The major portion of these side effects came as mild ones but headaches, nausea are the most common reason to stop men from taking viagra. Priapism or prolonged erection is the most severe side effect that might occur in some cases. Immediate medical consideration becomes mandatory if erection stays for more than 4 hours. This pill is strictly prohibited for those who are taking nitrate or any other form of this drug. It should be kept out of the reach of children. This article is a clear cut advice and instruction to all those men who are having sexual dysfunction or sexual problem that buy viagra to increase the life of your sex and your partner’s sexual satisfaction.