Digestive enzyme labels often use activity units such as HUT, FIP, ALU, DU and PU instead of listing every enzyme only in milligrams. These abbreviations can look technical, but they help describe measured enzyme activity under a defined test method.
The short answer
Do not compare digestive enzyme products by enzyme count or by the largest number on the label alone. First match the enzyme name, activity unit, amount per labeled serving and serving size. A value reported in HUT cannot be directly ranked against a value reported in FIP or ALU because the units refer to different assays.
Why activity units matter
Enzymes act as catalysts. For that reason, labels may report measured activity rather than relying only on ingredient weight. FDA guidance for enzyme preparations notes that activity units should be tied to an analytical method and clearly defined. When reading a supplement label, keep every number with its stated unit.
Common abbreviations you may see
| Label abbreviation | Commonly shown with | How to read it |
|---|---|---|
| HUT | Protease | An activity unit used for certain protein-digesting enzyme assays |
| DU | Amylase | An activity unit used for starch-digesting enzyme assays |
| FIP | Lipase | An activity unit used for fat-digesting enzyme assays |
| ALU | Lactase | An activity unit used for lactose-digesting enzyme assays |
| PU | Bromelain or papain | An activity unit used on some proteolytic enzyme labels |
This is a label-reading guide, not a conversion chart. Do not convert one unit into another or assume that a larger number in a different unit means a stronger overall formula.
Five details to compare on a digestive enzyme label
- Serving size: confirm whether the activity is listed per capsule or for multiple capsules.
- Named enzymes: look for the individual enzymes rather than relying only on a phrase such as “enzyme blend.”
- Activity units: keep HUT, DU, FIP, ALU, PU and other units attached to their exact values.
- Servings per bottle: compare labeled servings, not only capsule count.
- Directions and warnings: follow the current bottle label and ask a qualified healthcare professional about individual questions.
How to read the VHC LAB Digestive Enzymes label
The current VHC LAB Digestive Enzymes label lists 18 enzymes in a one-vegetable-capsule serving, with 60 labeled servings per bottle. Examples shown on the current Supplement Facts panel include protease in HUT, amylase in DU, lipase in FIP, lactase in ALU, and bromelain and papain in PU.
Use the complete activity table on the product page when comparing this formula with another product. An 18-enzyme count describes how many enzymes are listed; it does not by itself establish that the formula is appropriate for a particular person or purpose.
Frequently asked questions
Are enzyme activity units the same as milligrams?
No. Milligrams describe weight. Activity units describe measured activity under a specified assay. A label may include one or both types of information.
Can I compare HUT directly with FIP?
No. They are different units used with different enzyme assays. Compare the same enzyme and the same stated unit, while also checking the serving size.
Does a larger enzyme count mean a better supplement?
Not necessarily. Enzyme count alone does not show the activity of each enzyme, the labeled serving, directions, quality documentation or suitability for an individual.
Where should I check the current formula?
Review the current product page, bottle images and Supplement Facts panel before purchasing. Formulas and labels can change, so use the information on the bottle you receive.
Sources and safety note
Educational information only; not individualized medical advice. Follow the directions and warnings on your product label. Ask a qualified healthcare professional before use if you are pregnant, nursing, taking medication or have a medical condition.
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