{"product_id":"histdao-60-tablets","title":"HistDAO™ 60 Tablets","description":"\u003ch2\u003eDiamine Oxidase (DAO) Enzyme Supplement for Histamine Intolerance and GI Histamine Support\u003c\/h2\u003e\u003cp\u003eHistDAO 60 Tablets by XYMOGEN is a \u003cstrong\u003ediamine oxidase (DAO) enzyme supplement\u003c\/strong\u003e delivering 20,000 HDU of DAO enzyme per tablet — the primary enzyme responsible for breaking down dietary histamine in the gut before it is absorbed into circulation. This 30-day supply is designed for adults with histamine intolerance who experience symptoms after consuming high-histamine foods.\u003c\/p\u003e\u003ch2\u003eHow DAO Enzyme Deficiency Causes Histamine Intolerance\u003c\/h2\u003e\u003cp\u003eHistamine is found in high amounts in fermented foods, aged cheeses, wine, processed meats, and leftovers. In individuals with sufficient DAO activity, dietary histamine is degraded in the gut before absorption. When DAO activity is low — due to genetic variants, intestinal damage, medications, or nutrient deficiencies — dietary histamine passes through and reaches circulation, triggering symptoms including headaches, flushing, nasal congestion, GI distress, and skin reactions.\u003c\/p\u003e\u003ch2\u003eKey Features of This DAO Enzyme Supplement\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e20,000 HDU diamine oxidase per tablet — clinically meaningful enzyme activity\u003c\/li\u003e\n\u003cli\u003eDegrades dietary histamine in the gut before absorption\u003c\/li\u003e\n\u003cli\u003e60 tablets — 30-day supply at 2 per day (before meals)\u003c\/li\u003e\n\u003cli\u003eSupports histamine intolerance symptom reduction after high-histamine meals\u003c\/li\u003e\n\u003cli\u003eComplements low-histamine dietary strategies\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho This Is For\u003c\/h2\u003e\u003cp\u003eThis DAO enzyme supplement is ideal for adults with confirmed or suspected histamine intolerance — particularly those with recurring GI symptoms, headaches, flushing, or nasal congestion after eating fermented, aged, or high-histamine foods.\u003c\/p\u003e\u003ch2\u003eHow to Use\u003c\/h2\u003e\u003cp\u003eTake 1–2 tablets before histamine-containing meals, or as directed by your healthcare provider.\u003c\/p\u003e","brand":"XYMOGEN","offers":[{"title":"Default Title","offer_id":51252270268718,"sku":"000000000300100117","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/3297\/1822\/files\/515x515-0011612-histdao-60-tablets.png?v=1779594444","url":"https:\/\/www.drmattgianforte.com\/products\/histdao-60-tablets","provider":"Lifeworks Integrative Health","version":"1.0","type":"link"}