
Bifidus regularis is a marketing name generated by Danone (known in the US as Dannon) for one of the specific bacteria it uses in its “Activia” range of yogurt products.
According to the Federal Trade Commission, Dannon's advertising contained exaggerated health claims before a settlement reached in December 2010. Specifically, the FTC questioned claims that eating a single serving of Activia a day relieves bowel irregularity and that drinking DanActive prevents colds or the flu.