Irwin noted that the four Internet pharmacies claiming to be Canadian didn’t ship medication from Canada; most came from Hong Kong instead. The announcement from Teva can be seen here. Perhaps most striking is that the generic will not have the signature blue color. Erectile Dysfunction. It’s a huge problem. · Here are some key characteristics to distinguish real Viagra from the fake. 1. Colour consistency. Real Viagra has a homogenous colour. That means that it should not have any variation in colour within the same tablet or with other tablets in the same packet. Real Viagra is always recognizable by its light blue tint. DON’T BE FOOLED BY COUNTERFEIT VIAGRA. VIAGRA is one of the most counterfeited drugs in the world. Counterfeits aren’t just a cheap knockoff of a proven product; they’re illegal, potentially harmful fakes. It’s hard to tell where or how they were made—or even what’s inside them. While some of what’s sold as generic Viagra online is fake, several reputable companies sell sildenafil online. Each of the companies below has been vetted by our team for medical and business.