So an unscrupulous manufacturer could put that on the label, whether it was true or not. People who are saying this are misleading people. Of course, the same people who on the one hand urge you to look for non-existent or meaningless USP designations, turn around and tell you to drop some calcium tablets into vinegar to determine if they will properly disintegrate. They did that in this book. There are, indeed, specific tests in the USP for testing both disintegration and dissolution.
Disintegration merely shows that the tablet breaks up into small particles.
It does not show that the active ingredient actually dissolves. That is the role of dissolution testing. Bottom line, if the manufacturer is reputable, he will do proper USP disintegration testing before releasing the product for shipment. Back the to same question of trust. I agree Sam.