Any systemic enzyme product whose label tells you the milligram amount of any enzyme in a product is not telling you anything. Enzymes are measured by activity not milligrams. All enzymes as raw materials come in strengths, stronger and weaker versions of the same enzyme (i.e. industrial grade, the various food grades vs pharmaceutical grade). For example, the extract potency for Pancreatin starts with a 10x - 12x now being the strongest available and 4x being relatively weak. You can have one milligram of a particular enzyme with 100,000 units of activity while 100mg of the same enzyme from a different enzyme maker might have only 50 units of activity. So, milligram measurements tell you nothing about the strength of an enzyme. Zymessence® uses only the top strength enzymes in its blend!
While the enzymes that go into a blending machine might have a particular amount of activity when fresh, if the blending and tableting process is not done correctly for enzymes the enzymatic activity of the finished product will be less due to the process having inactivated (killed) the enzymes.
Product makers who don't actually take and use their own products have ZERO idea as to whether any particular product actually works or not. Don't rely on sales staff to tell you how well a product works. It's their job to tell you the stuff is great regardless of how dead and useless it might be. Remember that most of the sales personnel in the nutritional industry are not health professionals nor are they the health minded folks that those in the health food stores might be; for them it's a job, selling vitamins or used cars or furniture it's all the same.
Everything we build at WAM Essentials, Inc. we personally use. We're the first ones to know whether a product actually works or not. We have no sales staff here, just customer service representatives to take customer orders. No one works on commission, no one answering the phone gives off the wall false claim answers on a products abilities or health advice. We don't sell anything that we don't think works and we get rid of products that give us less-than-desired results or we revise the products if we feel we can make the formula work better (new data always helps us here).
You can read more about this topic on a DWE Blog post: Systemic Enzymes: Milligrams vs Units of Activity