what is activia
What is Activia. Activia is a delicious probiotic yoghurt from Danone. It contains an exclusive probiotic Bifidus ActiRegularis Â® which is scientifically proven for its ability to survive in the digestive system and help improve digestive comfort.ctivia is a delicious probiotic yoghurt from Danone. It contains an exclusive probiotic Bifidus ActiRegularis Â® which is scientifically proven for its ability to survive in the digestive system and help improve digestive comfort.