....DBM Endurance Supplements - Certificate of Analysis We believe that having a Certificate of Analysis (C of A) is highly important when you are adding supplements to your routine. What is a C of A? It's a document which states every active and inactive substance used to manufacture a product. We are very particular about what goes into our products and part or our commitment to quality is to ensure that we have C of A's for the key ingredients we use. In addition a C of A also shows there are no additional ingredients added to the DBM Endurance PRO formulation or DBM Endurance Original which gives you peace of mind knowing the high quality levels our products are manufactured in. Certificate of Analysis: Cordyceps Sinensis Certificate of Analysis: Rhodiola Rosea