Nature39s own immune support 1 3 1 6 beta glucan supplement is a pure extraction and does not contain enough yeast protein to cause any allergic reactions beta 1 3 1 6 glucan is a natural form of soluble dietary fibre derived from the cell wall of baker39s yeast beta 1 3 1 6 glucan provides a role in activating the immune system alerting the body to help defend itself against viral and bacterial invaders due to its ability to assist in immune response beta 1 3 1 6 glucan i