Magnesium oil is absolutely safe to use while pregnant and in fact will be very beneficial to both you and the baby. It is helpful to prevent pre-eclampsia as well as it has anti-seizure and anti-hypertensive properties.
Dr. Sircus states that pregnancy cannot be normal unless magnesium levels are adequate. The concentration of magnesium in the placental and fetal tissues increases during pregnancy and the requirements for this element in a pregnant woman’s organism generally exceed its supply. Hence, pregnancy should be considered a condition of ‘physiological hypo magnesemia’ and magnesium should be supplemented. Only caution is if you have kidney dysfunction, then only use it under your doctors supervision.
Please see Dr. Sircus’s article for further information:
Also consider getting a copy of the book Humane Pediatrics which gives a whole world of information on magnesium, iodine, and bicarbonate and other things that Dr. Sircus recommends in caring for our children. It is a good resource to keep at home.