Magnesium Chloride is an ionic mineral compound based on chlorine, negatively charged, and magnesium, positively charged. It is extracted from seawater specifically from northern Europe, its high purity and quality make it one of the purest in the world. This compound is a powerful muscle relaxant and allows the best absorption and fixation of phosphorus and calcium. It is extracted from seawater, from northern Europe. Its great purity and quality make it one of the purest in the world. This compound is a powerful muscle relaxant and allows the best absorption and fixation of phosphorus and calcium. Made in the country Netherlands