Bio-Strath Tablets are made to a special herbal yeast formula. Bio-Strath® is a balanced formula derived from the active principles of live herbal yeast which has been treated by a unique biological process producing a herbal yeast complex rich in vital nutrients. For many days, live active Saccharomyces Cerevisiae yeast is cultivated on the following wild herbs: angelica, balm, basil, caraway, chamomile, cinnamon, elder, fennel, horseradish, hyssop, lavender, liquorice, parsley, peppermint, sage and thyme. By the special process of plasmolysis by fermentation, without the use of heat or chemicals, the herbal yeast cells are burst open releasing their valuable nutritionally vital substances.