Martin Pleasance Kidz Minerals Strong Bones and Teeth 100T. Bones that are strong and healthy from a young age are more likely to remain strong and healthy throughout our lives. Calcium is important for strong bones and also for healthy muscles. Magnesium is also found in our bones and works with calcium to build strong structures. Martin & Pleasance have been manufacturing Schuessler Tissue Salts for over 130 years and still use the traditional process of hand-grinding the minerals. Tissue Salts are based on the original system developed by Dr WH Schuessler, a German chemist and physician, who recognized that when the body is lacking one of these 12 essential minerals many common ailments may occur. Through quick absorption of these micro dosed minerals and stimulation of the body’s natural healing responses, Schuessler Tissue Salts offer an easy to take solution for the relief of fever, cough and colds, teething, muscle cramps, skin problems and many more common health concerns.