DAO is a must-have at mealtime. Its claim to fame? The enzyme that breaks down dietary histamine.* Count on our powerful formula for support to stay feeling your best as you navigate the right foods for you.

Helps the body break down, or metabolize, histamine from food*

Delivers a potent 4.2 mg of diamine oxidase (DAO) per serving, supplying 60,000 histamine degradation units (HUDs)

An enzyme naturally present in the gastrointestinal tract, our DAO is plant-based and sourced from pea sprouts

Our Enteric Shield VegCaps protect the DAO during the digestive process to help ensure it reaches your gut*

DAO Enzyme Supplements - An enzyme naturally present in the gut, diamine oxidase, or DAO, helps the body break down histamine from the foods you eat.* Perfect for people with histamine sensitivities, our DAO supplement delivers 4.2 mg DAO enzymes per VegCap

Strong, Plant-Based Support - Vegan and formulated from non GMO pea sprouts, DAO Enzyme supplies 60,000 HDUs (histamine degradation units) per serving and is vegan, gluten free and made without soy

Your Mealtime Helper - The perfect after-meal support while traveling or any time. Take our DAO enzymes 15 minutes before a meal to help the body metabolize histamine from the foods you eat*

Soothing, Everyday Comfort - Perfect for everyday use, our DAO Enzyme supplement is great for traveling and helps keep you comfortable after your meals

Trusted Supplements - Nutra BioGenesis has been dedicated to creating premium supplements since 2000. Crafted with care and backed by science, we're here to support your journey to better health

Suggested Use / Directions:
Take 1 VegCap three times daily with meals. Store in a cool, dry place

Serving Size:
1 VegCap

Amount Per Serving:

Diamine Oxidase (from Pea Sprouts) (Supplying 60,000 HDU) ... 4.2mg

Other Ingredients:
Cellulose, Vegetable Cellulose Capsule, Cellulose, and Silica.


WARNING: Do not use if safety seal is broken or missing. Keep out of reach of children. Consult a licensed healthcare practitioner before using this product.