The beta-glucans in Immunizen are isolated from the cell walls of yeast. The finished product does not contain any yeast components or byproducts, so it should present no problem for those who are sensitive to yeast. But, as with introducing any new supplement, we recommend starting slow and discontinuing use if there are any concerns.
Please note that the information provided is intended for the US market only; product availability is subject to change. Product availability, policies and practices may vary in other regions. We advise you to verify with your local market for the most updated and accurate information for your specific region or country.