Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
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10 Best dao supplements of 2025
Save up to 19% off
Best Choice1
Designs for HealthDesigns for Health HistaGest-DAO - Diamine Oxidase DAO Enzyme to Support Digestion of Histamine-Containing Foods - 20,000 HDU DAO Diamine Oxidase Enzymes (60 Gastro-Resistant Tablets)
Key specs-
Usage:Take one before meals
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Formulation:Delayed-release tablets
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Ingredient Type:Diamine oxidase enzyme
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Effect:Support digestion of histamines
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Support Type:Digestive health
9.8Exceptional
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Value for Money2
Bravado LabsBravado Labs DAO Supplements Histamine Blocker – Extra Potent 30,000 HDU DAO Enzyme Formula for Histamine Digest & Immune Support – for Food-Related Histamine Intolerance - Daily Use - 120 caps.
10% Off9.5Excellent
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3
NATURDAOCOM LEGUMACTIVENATURDAO - 1,000,000 HDU - DAO Enzyme Supplement - Histamine Block - Diamine Oxidase - Food Intolerance - 60 Tablets
Key specs-
active ingredients:DAO enzyme, vegetable protein
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form:Tablets
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usage:Digestive support
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certifications:Suitable for vegans
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flavor:N/A
9.4Excellent
Our Rating
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4
Seeking HealthSeeking Health Histamine Digest - Formerly Histamine Block, DAO Enzyme Supplement for Histamine Food Intolerance, Supports Digestive Health, Upset Stomach, Vegetarian (30 Capsules)*
9.3Excellent
Our Rating
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5
Life ExtensionLife Extension Food Sensitivity Relief with Diamine Oxidase (DAO), Occasional Gas, Digestive Comfort, histamine Sensitivity, DAO Enzyme Supplement, Gluten Free, Non-GMO, Vegetarian, 60 Capsules
19% Off9.0Excellent
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6
Ancestral SupplementsAncestral Supplements Grass Fed Beef Kidney Supplement, 3000mg, DAO Enzyme Supplement, Kidney Support for Urinary and Histamine Health, Selenium, B12, Non GMO, 180 Capsules
Key specs-
Origin:New Zealand, Australia
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Usage:Kidney health support
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Enzyme Blend:Diamine oxidase DAO
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Form:Capsule
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Dietary Restrictions:No GMOs, fillers
8.9Very Good
Our Rating
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7
SOLARAYSOLARAY DAO Enzyme - Digestive Enzyme That Breaks Down Histamine - 60,000 HDU - Digestive Enzymes - Vegan, Gluten Free, Lab Verified - 30 Servings, 30 VegCaps
8.8Very Good
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8
Infuse AllurèInfuse Allurè - Premium Histamine Block Supplement - Advanced Diamine Oxidase DAO Enzyme for Food-Derived Histamine Intolerance - Made in USA 60 Capsules
8.6Very Good
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9
MedagelHISTAsolv Extra Strength DAO Enzyme Supplement for Histamine Food Intolerance - Eases Digestive Discomfort - Patented Tech - Made in Austria - 30 Pack
8.5Good
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10
Healthy GutHealthy Gut HistaHarmony | Delayed Release DAO Diamine Oxidase Histamine Support Enzyme | 30,000 HDU | 60 Servings
Key specs-
Origin:USA
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Usage:Healthy breakdown of histamine
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Enzyme Blend:DAO enzyme
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Form:N/A
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Dietary Restrictions:N/A
8.4Good
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