Herbal viagra

Herbal viagra is a name that can be given to any herbal product advertised as treating erectile dysfunction. The name "herbal viagra" is taken from the brand name Viagra, under which drug company Pfizer sells sildenafil citrate, a drug that is used to treat erectile dysfunction. Viagra has become a generic term for many people discussing drugs designed to treat erectile dysfunction, even those without sildenafil.

There are many different products advertised as herbal viagra, but with varying ingredients. There are no clinical trials or scientific studies that support the effectiveness of any of these ingredients for the treatment of erectile dysfunction and some products are known to also contain a "hidden drug ingredient".

Herbal viagras, contrary to what the name suggests, do not normally contain sildenafil citrate. However, synthetic chemical compounds similar to sildenafil have been found as adulterants in many supplements which are sold as herbal viagra or "natural" sexual enhancement products. The United States Food and Drug Administration has warned consumers that any sexual enhancement product that claims to work as well as prescription products is likely to contain such a contaminant. Scientists estimated that >60% of the consumed sildenafil in the Netherlands is from illegal sources such as adulterated dietary supplements.