What is important, the fact that ,, Made in Germany '' it says - this was the case with me and I had no problems with the product. Said effect has been shown for about 2 weeks - all the best. Solubility in water for a few seconds, after which it settles at the bottom, but this is the case in many creatine products of different manufacturers. Only the disgusting smell of the package, however, is daunting, after racking was the smell away. Good product for excellent price.