Premium Extract Standardized. 25% Anthocyanosides. Now with 40 mg Standardized Extract. 100% Vegetarian. Futurebiotics® Premium Extracts are scientifically analyzed and standardized to ensure that the key constituent of each herbal extract is maintained at its optimum level for maximum consistency and herbal activity. Futurebiotics Bilberry extract is standardized for 25% anthocyanosides the active constituent in Bilberry that research has shown to be most effective. Whole bilberry fruit is added to provide all the naturally occurring co-factors nature intended.