I came to know about magnesium oil through reading The Transdermal Magnesium Therapy by Dr Mark. Sircus and The Magnesium Miracle by Dr. Carolyn Dean. It happened that one morning i was having an anxiety attack. I did not want to take xanax, luckily i remember my magnesium oil. Anxiety attack was cured instantly in 30 minutes after applying some of it on my back. But you need to massage it in order to be more effectively absorbed. Thanks iherb!