a full 320mg of beta sitosterols extract,with 15mg zinc, which contributes to the maintenance of normal testosterone concentrations*,twice the nutrient reference value (nrv) for vitamin d3*prostex® contains the perfect balance of nutrients from vitamins, minerals and amino acids in a convenient dose. we’ve reworked our formula to include a higher level of beta sitosterols derived from a natural plant source. we insist on the most concentrated extract where the beta sitosterols level is standardised to provide a full 320mg, matching current scientific research. many similar products on the market only contain half this amount. prostex® delivers twice the nutrient reference value (nrv) for vitamin d3, in the highly absorbed d3 form at 10μg - vitamin d contributes to the normal function of the immune system. the bioflavonoid, quercetin, is included at relevant levels, as well as three essential amino acids alanine, glycine, and glutamic acid , all of which are in their free form for easy absorption. this advanced formula also includes a healthy zinc level at 15mg for the maintenance of normal testosterone concentrations, fertility, and reproduction. we’ve chosen to encapsulate our high-performance formula in easy-to-swallow tablets not capsules since this material can accommodate concentrated levels of fine-grade beta sitosterols, vitamin d3, quercetin, zinc, and other amino acids. to ensure prostex® meets our strict quality standards, we manufacture and package our high-strength formula in uk factories working to rigorous good manufacturing practice (gmp). this product is suitable for vegetarians not vegans. many customers choose to take our high strength fish oil 1100mg supplement alongside this product, particularly if they don’t regularly achieve the recommended intake of oily fish from dietary sources.what do zinc and vitamin d3 contribute to?zinc contributes to the maintenance of normal testosterone concentrations in the blood and the protection of cells constituents from cell damage. this mineral also contributes to the normal function of the immune system, as does vitamin d3. want to learn more about prostex® or beta sitosterols? drop a line to one of our expert |nutrition advisors//aadvice//class=f-brand !important| . simply click |here//aadvice//class=f-brand !important| to contact a member of our nutrition team. alternatively, head over to our |dedicated health blog//h4//class=f-brand !important| to find out more about supporting your health and wellbeing.