100% this is what I experienced .. I was fine for months after taking the supplement then I went away for holiday, forgot my supplement and the leg cramps at ni

100% this is what I experienced .. I was fine for months after taking the supplement then I went away for holiday, forgot my supplement and the leg cramps at night came back after sometime. When i came home, i started taking it again and the cramps were gone. Just from that experience, it confirmed to me that magnesium deficiency was the root cause.