Bifidyn by Source Naturals/Bifidobacterium Longum

I've been looking for a bifidobacterium Longum probbiotic for a long time, and I think I found one today called Bifidyn by Source Naturals. Here is the product info: Freeze-Dried Bifidus (approx. 6,400,000,000 viable cells Bifidobacterium longum and Bifodobacterium bifidum). Bifidobacterium Longum is supposed to be one of the more helpful strains.