Watch the video. Is that a Ben Carson impersonator? This is not the only article. This is just the first one that included the video.
Carson lied through his teeth about this and also about his position on Medicare. He also changed position on ethanol.
He is completely unstable on the issues.
So Ben Carson says he is a fan of the product, and he gives and endorsement of the product.
That seems like confirmation instead of a lie.