The problem with the yakults and inner healths and other pro-biotic preparations are this:

* most are fast-tracked to grow in faecal matter (in-liven only use natural sources like fruit and vegies)
* most contain only one or two strains of pro-biotics (in-liven has 13)
* they measure by the amounts of bacteria they have. but bacteria live and work in colonies - in-liven is measured in CFU's - colony forming units.

If you are taking in-liven I wouldnt bother with another pro-biotic. The benefit in-liven has over other probiotics is its mix with wholefoods to give the nutritional bonus.