high strength calcium and magnesium tablets with relevant levels of vitamins d3 and k,for the reduction in the risk of osteoporotic bone fracture and the maintenance of normal teeth and bones*,easy-to-swallow, taste-free tablets from just 8p per day for more information, please read our |vitamin d faq//b111//class=f-brand !important|our best-selling osteoguard®, original formula is an excellent choice for those who want to optimise their bone health, thanks to it supplying all of the key nutrients at safe yet nutritionally relevant levels. evidence increasingly suggests you need both dietary calcium and magnesium to slow down bone loss, which is reflected in our specalist bone health formula. each taste-free coated tablet provides 500mg of calcium and 125mg of magnesium. many customers choose to take osteoguard® original alongside a low strength multivitamin, where tablet size and space restrict the inclusion of useful amounts of calcium and magnesium. osteoguard® original also delivers good levels of vitamins d3 and k, both of which contribute to the maintenance of normal bones. we\'ve included 10µg of vitamin d3 (twice the nutrient reference value - nrv) and 75µg of vitamin k (the full nrv) per two tablets. we\'ve chosen to provide our all-in-one bone health formula in tablets, not capsules, since they can accommodate highly concentrated levels of fine-grade calcium, magnesium, vitamin d3, and vitamin k. we\'ve carefully designed our tablets to dissolve within 60 minutes for maximum absorption.our high-strength calcium and magnesium tablets are made in uk factories working to good manufacturing practice (gmp) to meet our strict quality standards. this formula is suitable for vegetarians not vegans. unsure if osteoguard® original is the right choice for you? feel free to reach out to one of our |expert nutrition advisors//aadvice//class=f-brand !important| who can provide you with free and confidential advice. just click the ‚¬ëœnutrition advice\' button located at the bottom right-hand of our website to start a live chat. you can discover even more about |vitamin d3 and bone health here//b509//class=f-brand !important|. what do calcium and magnesium contribute to?calcium contributes to the maintenance of normal bones, teeth and muscle function. this mineral also contributes to the reduction in the risk of osteoporotic bone fracture.*magnesium, on the other hand, contributes to the maintenance of normal bones, teeth and muscle function.what do vitamins d3 and k contribute to*?vitamin d3 contributes to the maintenance of normal bones, teeth, muscle function and the normal absorption and utilisation of calcium/phosphorus. it also contributes to the reduction in the risk of osteoporotic bone fracture.*vitamin k, meanwhile, contributes to the maintenance of normal bones and blood coagulation. *a beneficial effect is obtained with a daily intake of 20µg vitamin d3 and 1200mg calcium. taking two osteoguard® original tablets daily provides 10µg vitamin d3 and 1000mg calcium, which goes a long way towards achieving these levels.