Herbal viagra, as well as natural viagra, are terms that various products to treat erectile dysfunction are sold under. There is no common active ingredient in these products, and some analyzed samples have had two or more active ingredients present.
Unlike viagra and generic viagra that always have sildenafil citrate as the active ingredient, products marketed by such names as herbal viagra or natural viagra have an active ingredient that varies with each different company that produces it.
This doesn't mean herbal viagra does not work at all, some types may produce satisfactory results. If you want to experiment, try buying small doses for as little money as possible. If the product does not work, there is minimal financial loss.
If the product works, you can order a larger amount if you wish to do so. Keep in mind the price of generic viagra, and the fact that it is a product that has been proven effective for a majority of men who have tried it.
If you can get generic viagra for a reasonable price, there is no reason to spend money on herbal viagra or natural viagra that may or may not work, unless you can purchase herbal or natural viagra for a fraction of the price of generic viagra.
The problem with herbal viagra and other similar products is that even if you find one that works perfectly for your needs, there is no guarantee that the next batch produced by the same manufacturer will contain the same ingredients.