Making pure ingredients compliant with good manufacturing process is expensive. It has lots of redundancy and things on the outside we consider waste. But experience tells us all these measures are necessary to ensure we get what we expect to get when we buy products that can cause great harm if incorrect.
Hmmm, just look up Thalidomide and Germany. As well as Sulfa drugs to find out why rigor in testing and efficaciousness as well as purity of ingredients is paramount and why they have established such stringent controls.
