Pfizer created a blockbuster medicine and changed the way erectile dysfunction was treated in men. It made the bedroom secret come out and helped people to talk about their problem of erectile dysfunction or impotence in open. Treatment of erectile dysfunction was revolutionized after the successful launch of Viagra. Viagra also helped fuel a huge counterfeit market with the huge success it received. Counterfeit drugs are generally fake drugs or products or may be the generic version of the real drug which is made and sold without the approval and supervision of FDA. The problem of counterfeit drugs has been around in the world for a very long time. A study showed that one third of malaria drugs tested in the Asia contained no medication. FDA has warned people of the counterfeit drugs available on many internet sites. A few years ago Pfizer had launched a public awareness ad campaign against the sellers of “Generic Viagra” to help educate consumers about how to avoid illegitimate websites, safely buy Viagra online and help minimize selling of cheap Generic Viagra. Pfizer, makers of Viagra, is now fighting this huge world of counterfeit drugs through technology. It’s called the RFID, radio frequency identification. Viagra is one of the major drugs that are sold through internet. One can buy Viagra online from hundreds of sites on the net. The RFID tags are attached to all US shipments of Viagra to detect counterfeit pills. Counterfeit drugs are often manufactured in foreign countries and can be an imitation of the original drug. They can also contain dangerous substances like boric acid, leaded paint or floor wax. Pfizer, though it says is unaware of anyone being harmed by counterfeit Viagra. Pfizer has a lot to lose financially. Viagra is one of the major hot selling drugs for Pfizer. And the company loses tens of millions of dollars to the counterfeit drug trade each year. According to World Health Organization (WHO), the counterfeiting of medicines estimates to make up 10% of the global medicines trade. The WHO is calling for an international campaign to combat the growing epidemic of counterfeit. WHO estimates the trade in counterfeit drugs is now in the vicinity of $35 billion a year. As the problem of counterfeit drugs is worldwide, many governments are beginning to take the counterfeit drug trade more seriously, and more must be done. China’s new regulations to curb internet sales of counterfeit drugs are regarded as a step in the right direction. Most people who buy drugs over the internet are unaware that they could easily be buying Viagra drugs that could be an imitation and buying Viagra online without a prescription should be completely avoided.