Herbal Yeast Food Supplement. In the modern laboratory, overlooking Lake Zurich in Switzerland, the greatest possible care is taken to ensure that only goodness goes into Bio-Strath. Whether we are 16 or 60 there are times when life demands that little bit extra - particulary when we are feeling tired, run-down or recovering from illness. Bio-Strath is a useful food supplement which accelerates recovery following illness and helps to regain and sustain health. Bio-Strath contains the active principles of herbal yeast (Saccharomyces cerevisiae) which has been treated by a biological process producing a yeast complex containing natural nutritionally vital substances. For many days, using this unique process, yeast is cultivated on the following 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 and making them readily available for the body to digest easily. The additional natural ingredients are honey, malt and orange juice. Bio-Strath products are free from all artificial colourings, flavourings and preservatives.