The real Viagra comes in a mostly white box with some blue on it. The key to look for is a small holograqhic sticker about the size of a nickel, but it's square. It will say Phizer in a 3D sort of image among other things. It's very detailed and looks too high tech and expensive for a counterfeiter to produce. And if you try to remove it, it destroys it. Upon opening the box, the pills are encased in a sealed foil packaging. Also, to know the real deal- the pill itself is shaped like a diamond, blue and if you snap it in half, it's the same color blue within. The generic one I bought looked same as a real one on the outside (no box of course) but was white inside. But it still worked.