Melange Tissue Salts act on the cellular level to balance and restore cell function. UNDA Tissue Salts are prepared using methods based on Dr. W. H. Schüssler Biochemical System of Medicine (in accordance with the German Homeopathic Pharmacopeia [HAB]). Established over half a century ago in Belgium, UNDA is renowned for manufacturing exceptional homeopathic products utilized in supporting immune, lymphatic and endocrine systems.