It lives in crystal–clear and high mineral-material waters of West-Europe. 34% of combination is natural, organic calcium (33 dkg calcium in 1 kg alga ), which is the most important material for our body. Calcium is necessary to renew our dent, bones, nails and hair. Scientifical searches attests, that the natural calcium–againts the synthetic made one – can work off 90%, and it’s action can be boosted with Spirulina. So will be LITHOTHAMNIUM the best calcium- supplier of our dents and bones, and it is a good answer to go before bone-extenuation.