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There is nothing as L. bifidus. There used to be a Lactobacillus bifidus, but since 1969 this may not be used anymore. It probably refers now to any strain of any of the more as 25 species of Bifidobacterium. Which basically means, that you have absolutely no idea to what it refers.

Bifidobacterium animalis supsp. animalis strain (Acti)Regularis is a strain used by Danone in their Activia range. This is a well defined and described strain, which has scientifically proven health effects.

So the difference is that one is a non existing unclear wrong name that non one knows what it means and a well defined starin.

Ralf Hartemink, PhD

Food Microbiologist

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13y ago

What else can I help you with?