Our Guarantee

We pledge that all Loomis Enzymes® products are of the highest standard of purity and quality. Loomis Enzymes stands behind its products with a 30-day satisfaction guarantee. If you are not satisfied with your purchase, return the product in new condition within 30 days for a full refund of the product price.

Good Manufacturing Practices

Our products are manufactured exclusively by manufacturers in the United States that have been certified FDA GMP compliant by an independent third party. GMP stands for Good Manufacturing Practices, which are a set of guidelines drafted by the Food and Drug Administration specifically for the dietary supplement industry. These GMPs are similar to pharmaceutical GMPs in some important respects. They address everything from raw material handling and sampling through the manufacturing process to finished goods and product labeling. We ensure our manufacturers' continued compliance with the current FDA GMPs with an independent annual audit when needed.
Our manufacturers must provide a certificate of analysis for each lot number shipped to our Madison headquarters for distribution. This certificate of analysis must indicate that the product meets our specifications for purity and safety. We then employ certified independent laboratories to randomly re-test the finished product and confirm the manufacturer's provided certificate of analysis. These laboratories verify the products meet Loomis Enzymes's specifications using the most advanced equipment and test methods, including HPLC and GC-MS. These laboratories are also used to perform independent microbiological tests to ensure supplement purity and safety.


The vast majority of our products are sealed in white PETE plastic bottles. We chose PETE bottles due to the large number of facilities available to recycle this type of container. Inner seals and outer seals protect against product tampering.
All of our products are packed for delivery to the customer using corrugated boxes and paper that are 100% recyclable.

Manufacture Date, Lot Number, and Shelf Life

Our product labels display a date of manufacture, or "born on" date, indicating the day on which the product in the bottle was manufactured. Both lot number and manufacturing date may be found in one of two locations on the container: the bottom of the container, or the right-most label edge. If you believe this critical information is missing from a container, please check both locations.
The shelf life of our products vary. While most are considered stable at full potency for two years after the manufacture date, there are exceptions. If the product contains Rice Bran it is stable for eighteen months after the manufacture date. If the product contains a probiotic or Catalase it is stable at full potency for one year after the manufacture date. If you have any questions, please contact customer service.

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