That seems to have quinine in it. (Quinine used to be used in the U.S. for leg cramps but was taken off the market due to deadly cardiac arrythmias). I assume the amount of quinine in the product is minute. My doctor suggested that I drink a glass of tonic water (which also contains small amounts of quinine) before bed. All it seems to do is make me get up to go to the bathroom.
Anyway, let me know if that product helps you
Karen