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Osi Magnesium Oil is a unique mineral in that it is extracted from the depths of 1500-2000 meters from the inactive Zechstein Sea. Zechstein Sea is a prehistoric sea hidden thousands of meters deep in the earth’s crust. Its location, and the fact that it is protected from any form of modern, negative environmental impact, makes it the purest source of magnesium-chloride preserved in its genuine energetic state. This pharmaceutically pure and highly energised mineral is mined using state-of-the-art biotechnological methods.