Bifidobacterium lactis
That said, many of Bifidobacterium lactis competitors manufacture supplements with 10 million (or more) of CFU bacteria, so Bifidobacterium lactis is not necessarily the most potent available (note: Bifidobacterium lactis's Bifidobacterium lactis does not seem to be related to any way to PerfectBiotics from Perfect Origins).
Does Bifidobacterium lactis cause any side effects?
According to WebMD, most people who take probiotics do not experience side effects, and those who do are generally mild. These include digestive discomfort, bloating or gas, although these should disappear within a couple of days as your body adjusts to the increased levels of bacteria.
SEE ALSO: Side effects of probiotics: what to observe, when to talk to your doctor and when to say no