with vitamins c, d3, zinc and selenium for normal immune function* ,delivers high-strength vitamin d3 at 25µg (1000iu) ,convenient, one-a-day, vegetarian-friendly tablet providing 1,3/1,6 beta glucans for more information, please read our |vitamin d faq//b111//class=f-brand !important|our high-performance beta glucan supplement is an excellent choice for those who exercise regularly, lead busy and active lives, or simply want to support their immune health. it\'s the perfect partner to some of our other best-selling products, including ashwagandha, rhodiola rosea, and berryguard®, and quercetin. this convenient, one-a-day formula contains 250mg of highly purified and concentrated 1,3/1,6 beta glucans extracted from the cell wall of a proprietary strain of baker\'s yeast called saccharomyces cerevisiae. our beta glucan supplement also delivers 25µg of vitamin d3, 150mg of vitamin c, 10mg of zinc and 110µg of selenium, all of which contribute to the normal function of the immune system.* the inclusion of selenium further contributes to the protection of cells from oxidative stress. we\'ve chosen to formulate our beta glucans as tablets, not capsules. tablets can accommodate a higher amount of active ingredients, making it the most appropriate casing for this broad-spectrum formula. to meet our rigorous quality standards, we manufacture and package our beta glucan supplement in uk factories working to good manufacturing practice (gmp). although this formula is naturally gluten-free and vegetarian-friendly, it\'s not suitable for vegans. still unsure if our beta glucan supplement is the right choice for you? have a chat with one of our expert nutrition advisors. they have a wealth of experience between them and are always happy to help with free and confidential advice. simply click the chat button located at the bottom right-hand side of our website. for more information on vitamin d3, please read our |vitamin d faq//b111//class=f-brand !important|.what do beta glucans contribute to?our beta glucan supplement contains vitamin c, vitamin d3, zinc, and selenium, all of which contribute to the normal function of the immune system. the addition of selenium also contributes to the protection of cells from oxidative stress. for more information on beta glucans, please read our article |why we don\'t sell mushroom//b757//target=_blank|.