Zechsal Pure Magnesium Body Gel contains pure magnesium from the unique 250 million years old ancient Zechstein Sea, the same sea that life on land developed from, untouched and never been exposed to modern day pollution! Magnesium is a natural approach to alleviate many pregnancy problems. Magnesium is an essential mineral for the health and wellbeing of mother and baby. Magnesium serves literally hundreds of functions within the human body. Your need for magnesium increases during pregnancy and in preparation of labor and giving birth.