To medical officials, it's snake oil, pure and simple - the water purifier being hailed as a cure for those most heinous of diseases, cancer and HIV.
It's called "Miracle Mineral Supplement" or "MMS" and it's yours for a modest $40.
Of course it's not the first, and certainly won't be the last, alternative substance to be touted as the saviour to end all saviours.
But authorities are particularly concerned about this one. It's a powerful bleach which they say is downright dangerous.
Reporter Michael Holland is on the trail of this so-called miracle in a bottle.