Histamine Digest PureMAX with DAO Enzymes -Pure DAO
Nothing but pure DAO. OmneDiem® Histamine Digest® PureMAX is a single-ingredient diamine oxidase (DAO) enzyme supplement delivering 40,000 HDU (4.8 mg of pure DAO) per designed-release capsule — with no added nutrients, fillers, or excipients. Made for people with multiple sensitivities and higher DAO needs.*
What Is Histamine Digest® PureMAX?
PureMAX is OmneDiem's purest DAO formulation to date. Each capsule contains only 4.8 mg of naturally sourced DAO (40,000 HDU of enzyme activity) and ultra-purified microcrystalline cellulose (MCC) — nothing else. If you're sensitive to multiple ingredients or simply want DAO and nothing more, PureMAX is the cleanest way to get it.*
How It Works
Many foods contain histamine or trigger histamine release in the gut. Diamine oxidase (DAO) is the primary enzyme responsible for breaking down dietary histamine. PureMAX delivers natural-source DAO in a designed-release capsule that dissolves in the small intestine — exactly where dietary histamine is processed — to support digestive health and comfort.*
Why Choose PureMAX?
- Highest potency: 40,000 HDU of DAO per capsule — for those with greater DAO needs.*
- Single-ingredient purity: No added nutrients, fillers, or excipients — just pure DAO and ultra-purified MCC.
- Designed-release delivery: The capsule dissolves in the small intestine, where DAO acts directly on dietary histamine.*
- Clean formulation: Free of sugar, dairy, gluten, and artificial additives.
- Quality you can trust: Produced in a certified GMP facility in the USA for consistent potency in every batch.
Product at a Glance
| DAO potency | 40,000 HDU (Histamine Digesting Units) per capsule |
|---|---|
| Pure DAO content | 4.8 mg per capsule |
| Other ingredients | Ultra-purified MCC only — no added nutrients or excipients |
| Delivery | Designed-release capsule that dissolves in the small intestine |
| Free from | Sugar, dairy, gluten, artificial additives |
| Sizes | 30 or 60 capsules |
| Made in | Certified GMP facility, USA |
Why the Change to 40,000 HDU?
Advancements in our extraction and manufacturing processes let us deliver more pure DAO activity per capsule than ever before — a higher potency of 40,000 HDU in a clean, single-ingredient format.
Frequently Asked Questions
What is Histamine Digest PureMAX?
PureMAX is OmneDiem's purest, highest-potency DAO enzyme supplement: 40,000 HDU of pure diamine oxidase per capsule, with no added nutrients, fillers, or excipients, in a designed-release capsule that dissolves in the small intestine.*
How is PureMAX different from regular Histamine Digest®?
PureMAX is a single-ingredient formula for those with multiple sensitivities or higher DAO needs — nothing but pure DAO and ultra-purified MCC. Compare the full Histamine Digest® family.
What is HDU and why does it matter?
HDU (Histamine Digesting Units) measures DAO enzyme activity — how much dietary histamine the enzyme can break down. Higher HDU means more histamine-digesting capacity per capsule.*
When should I take PureMAX?
Many people take DAO shortly before meals or beverages containing histamine, so the enzyme is active in the small intestine when dietary histamine enters the system. Follow the label directions and consult your healthcare provider for guidance specific to you.
Is PureMAX free of common allergens and additives?
PureMAX is formulated without sugar, dairy, gluten, or artificial additives. Note: the DAO in OmneDiem products is porcine-derived, so it is not suitable for those with pork allergies or following vegetarian, vegan, kosher, or halal diets.
Explore the OmneDiem® Histamine Digest® family →
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease or health condition, including histamine intolerance or DAO deficiency. Consult a qualified healthcare provider before beginning any new supplement, especially if you are pregnant, nursing, taking medication, or managing a health condition. Contains a porcine-derived ingredient. Keep out of reach of children.