Supplement Collections and Wellness Guides
OmneDiem offers an array of digestive enzymes, cognitive support supplements, and cutting-edge, high-quality, pure formulations in Creatine and beyond. In addition, OmneDiem specializes in enzyme-based supplements for people managing dietary histamine and everyday digestive comfort — including Histamine Digest®, a diamine oxidase (DAO) enzyme supplement that helps break down histamine from food and drink. Use this guide to find the right collection, or start with our educational articles if you're new to DAO and histamine.
Not sure where to start? Browse our most popular supplements, or learn the science first:
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DAO Enzyme Supplements
Diamine oxidase (DAO) enzyme formulas — including Histamine Digest® "The Original," PureMAX 40,000 HDU, and Histamine Digest 360 with vitamin B6 — that help break down dietary histamine before it's absorbed.
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Digestive Enzyme Supplements
Broad-spectrum enzyme blends like Superzymes and Ultra Proteo-Zimes™ that support nutrient breakdown, gut function, and daily digestive comfort.
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Micronized Creatine — Max Absorb
Unflavored creatine monohydrate powder made with single-sourced German Creavitalis®, micronized for easy mixing and absorption. 5 g per serving to support strength, recovery, and cognitive performance.
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Learn: Enzyme & Histamine Education
Evidence-informed articles on DAO enzymes, histamine in foods and drinks, low-histamine eating, and gut health — written to help you shop with confidence.
Visit the Education Hub → -

Best Sellers
Our most popular formulas — Histamine Digest®, PureMAX, Histamine Digest 360, and Drink HD — trusted by customers for daily digestive and dietary histamine support.
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Which Collection Is Right for You?
| If you… | Start here |
|---|---|
| React to histamine-rich foods or drinks (aged cheese, wine, fermented foods) | DAO Enzyme Supplements |
| Want everyday digestion and nutrient-absorption support | Digestive Enzyme Supplements |
| Are focused on strength, recovery, and performance | Max Absorb Creatine |
| Are new to DAO and want to understand the science first | Education Hub · DAO FAQ |
| Already know what works and want it on autopilot | Subscribe & Save |
Frequently Asked Questions
What is a DAO enzyme supplement?
Diamine oxidase (DAO) is the enzyme your body uses to break down histamine from food and drink. A DAO enzyme supplement, taken shortly before meals, provides extra DAO in the digestive tract to help break down dietary histamine before it's absorbed. Learn more in What Is Diamine Oxidase?
Which OmneDiem supplement should I start with?
Most customers managing dietary histamine start with Histamine Digest®, our original DAO enzyme formula. For higher-potency support, see PureMAX (40,000 HDUs); for general digestion, start with our digestive enzyme blends.
Which foods are high in histamine?
Aged cheeses, cured meats, fermented foods, vinegar, alcohol (especially red wine), and leftovers tend to be high in histamine. See our guides to foods high in histamine and the low-histamine shopping list.
Does OmneDiem offer subscriptions?
Yes — subscribe to any eligible product for automatic delivery and save 10% on every order, with free shipping and the flexibility to pause, skip, or expedite shipments anytime. Details on our subscription page.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.