Homeopathic. Plex Remedies are condition-specific homeopathic specialties prepared in low dilutions and are recommended for acute and chronic ailments. The product range helps support: the digestive, hormonal, immune, musculoskeletal, nervous, respiratory, skin, oral and vascular systems.† Established over half a century ago in Belgium, UNDA is renowned for manufacturing exceptional homeopathic products utilized in supporting immune, lymphatic and endocrine systems. In the production of all homeopathic remedies UNDA uses only pure materials and herbs that are biodynamically grown or wildcrafted. UNDA produces a broad range of homeopathic products in various potencies including: the unique Numbered Compounds, Gemmotherapy macerates, Schuessler Tissue Salts, Gammadyn Oligo-Elements, Organotherapy, Plexes, creams and oils, as well as homeopathic compatible dental care.