Surveys have found that erectile dysfunction pills account for almost eight in ten illicit medicine confiscations every year. This means that a high percentage of products marketed on-line as Viagra, aren't actually Viagra. Fake Viagra is of serious concern, because it is impossible to know exactly what it contains and what side effects it could cause.

The trouble is, fake Viagra can look EXACTLY like legitimate Viagra, with a few minor differences.

Color consistency: Real Viagra is uniform in color. Fake Viagra may have variations of color within the same tablet, or between different tablets in the same packet. The color on one side of a fake tablet may look different from the color on the other side.

Look at the "f" in Pfizer: The "f" is unique and hard to replicate, especially if you are making a stamp to mark individual pills. The stem on the real "f" doesn't start thinning out until it is almost at the top.

Tablet shape: A real Viagra tablet has a distinct diamond shape with smooth edges. Fake Viagra tablets are usually quite jagged with an indent before the edge.

Number of tablets per pack: Real Viagra is available in single packs or packs of 4. If your packet contains more than 4 tablets, it is likely counterfeit.

Always buy your Viagra through the correct channels and from a reputable source. Since the 11th of December, 2017, Viagra has been available as a generic in the United States. Generics are usually considerably cheaper than the original branded version of a drug.