Gammadyn I 30 ampules by Unda is a homeopathic supplement made from iodine. The trace mineral is essential and found in all tissues and organs of the body. It is mainly used as a way to keep the thyroid functioning properly and promote the efficiency of the metabolism. In addition, iodine aids in healthy salivary glands and skin. Some even take it to promote increased alertness and heal issues in the muscles, including pain and nodules.