Enzymes are measured by the amount of work they do. This is referred to as an enzyme's activity. The United States Pharmacopoeia (USP) outlines the standard units to measure the activity for most enzymes in the Food Chemical Codex (FCC). However, there are enzymes which are not defined in this publication: Proteolytic enzymes measured in DPP-IV units and proprietary enzymes are just two examples.
There is a vast amount of information available advising that an enzyme product should be labeled with these units and you should purchase the one that has the most activity. Many companies market their products in this manner, which is exactly how vitamin and mineral supplements are marketed. Unlike vitamin and mineral supplements, there is no recommended daily allowance for enzymes, nor is there a complete reference for maximum daily intake of each enzyme. Enzymes can have a profound impact on your body's chemistry and taking mega-doses of an enzyme is rarely a good choice.
Loomis Enzymes® does not market our products in this fashion. While we agree with very little that our competitors espouse, we do agree that enzymes should be purchased by their activity and the activity should be measured as prescribed by the FCC (if listed). Our products are backed by significant clinical work, perfecting the activity level of each enzyme we use. We feel the information and research accumulated in this time is proprietary. We protect it by listing enzymes in a "Proprietary Blend" with a cumulative weight. This method of labeling products is authorized by the FDA in CFR 21 101.36, Nutrition labeling of dietary supplements.
We source, formulate, test, and manufacture our enzymes by activity. If an enzyme is listed in the FCC, we require the activity to be measured in the unit it prescribes. Several of our products are the strongest available, while formulas with botanicals may only use enough enzymes to assimilate those botanicals. Many of our products have been on the market for over 20 years and have an unblemished safety record. We stand behind our products with a 100% satisfaction guarantee.