A "food supplement" that contains the active ingredient, sildenafil citrate, found in prescription-only medication for impotence has been reported by the Health Ministry, which called on the public not to purchase it.

It is called Vimbo or Senbo and was found by ministry lab workers to contain an erectile-dysfunction drug; it should not be used because it can harm public health if taken without medical supervision, the ministry said.

The "food supplement" was imported by the "Only You Marketing and Sales Ltd." company.

The capsule is manufactured in China, the ministry said, and contains various herbs in addition to the active ingredient.

The importer was told to prevent the product from reaching the markets, but if any has been purchased, customers should return it at the point of sale.

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