Periwinkle, the diabetes treatment?

Ai dont have diabetes myself, but ai know others have brought up the subject of needing a rewilded treatment. And ai think ai found one, check it out(third paragraph):
http://www.erowid.org/herbs/periwinkle/periwinkle_health.shtml
Prolly talking about madagascar periwinkle (Catharanthus roseus, which ai have in my yard)
Tell me what you think. This seems very interesting to me in its possibilities, so if anyone has more information, lay it down. :slight_smile: