Diamine Oxidase

Bio-Activity Analysis
Histamine Breakdown Efficiency
SCIENTIFIC DATA VISUALIZATION
Health Benefits & Sources
Why You Need It
- Stops Digestive Distress: It breaks down histamine in the gut, reducing bloating, cramping, and diarrhea after eating.
- Prevents Skin Flare-ups: By keeping blood histamine low, it helps stop hives, flushing, and eczema triggered by food.
- Clears Sinuses: It reduces the histamine load that causes chronic congestion and runny nose.
- Improves Sleep: Lowering histamine levels can help you fall asleep easier, as histamine is an alertness chemical.
Deep Dive
Histamine isn't just from allergies; it's in many foods (especially fermented/aged ones). If you have a 'leaky gut' or genetic variations (like HNMT or DAO mutations), you can't break it down fast enough. This is called Histamine Intolerance. Taking DAO enzymes (often derived from chickpeas) before a meal acts as a shield. It degrades the histamine in your food before it passes through your intestinal wall, keeping your immune system calm. It doesn't cure the intolerance, but it manages the symptoms effectively.
Natural Food Sources
Unlike most nutrients, we don't eat DAO directly; we eat the building blocks (Copper and Vitamin B6) and foods that help our body produce its own enzyme. However, some foods contain trace amounts of DAO activities.
| Food | Amount | Notes |
|---|---|---|
| Kidney Beans | High | Excellent source of Copper (vital for DAO production) |
| Potatoes | Medium | Contains DAO activity; generally well tolerated |
| Broccoli | Medium | High in B6 (co-factor for DAO) |
| Eggplant | Low | Contains some DAO activity |
| Spinach | Low | Rich in B6 and minerals |
Supplementation
If you suffer from Histamine Intolerance (HIT), a DAO supplement is often recommended.
- Dosage: Typically 10,000 HDU (Histamine Degrading Units) taken 15-20 minutes before a meal.
- Source: Most supplements are derived from fermented Pea Protein or Kidney Bean extract. They are vegan-friendly.
- Who should take it: People with diagnosed histamine intolerance, those with SIBO (Small Intestinal Bacterial Overgrowth), or anyone experiencing reactions to healthy foods like avocados or spinach.
Top Food Sources
Frequently Asked Questions
Safety & Side Effects
Diamine Oxidase is generally recognized as safe (GRAS) and is a natural enzyme, not a drug.
- Side Effects: Very rare. Mild digestive upset can occur but is usually caused by the filler ingredients (excipients) in the pill, not the DAO itself.
- Interactions: It is localized to the gut and does not interact with most medications.
- Who Should Avoid: Pregnant or breastfeeding women should consult a doctor (due to lack of specific safety data), though it is generally considered safe because it is not systemically absorbed. Note: DAO supplements do not help with seasonal pollen allergies (which involve IgE antibodies), they only help with food-derived histamine.
Scientific References
- [1]Maintz, L., & Novak, N. (2007). Histamine and histamine intolerance. The American Journal of Clinical Nutrition.
- [2]Komericki, P., et al. (2011). Histamine intolerance: lack of response to standard allergy testing.
- [3]Wöhrl, S., et al. (2004). Histamine intolerance: a metabolic disorder?