I have spent the last few days running a search and the only thing I have come up with is a brand called BioCare Bio-Magnesium, which is in tablet form. I really wanted to get it in liquid form as this would be easier to digest. There are also some place that do a combination of different minerals in liquid form but they are very expesive and it may be that there is a very small amount of Magnesium Chloride in there.
I know it's a pain because in the States it seems like its every where and really cheap but to get it ship is like triple the price. Anyway if you hear anything let me know...Good Luck...Moonie