Healthy Gut HistaHarmony | Delayed Release DAO Enzyme Supplement | 30,000 HDU Diamine Oxidase Histamine Blocker | 60 Servings

Very effective! I’ve been purchasing another brand for a few years and decided to try something new. I think these work better. They are more adorable too. Win-win!!! Highly recommend.

Don't have a gallbladder??? Get this! That bile drip slows down DAO production leaving histamine in the gut caused ny inflammation from lack of bile and lower DAO production! Taking a DAO supplement is like hiring temporary workers. You are putting the enzymes directly into your gut right before you eat. ​Even if your body is struggling to make its own DAO because your digestive system is still adjusting to life without a gallbladder, the supplement catches the histamine in your food and neutralizes it before it can cause trouble—like those "internal" reactions, flushing, or digestive upset. I suffer from histamine intolerance my bile and DAO production ended up so low (7 years no GB) and I can eat pizza and burgers again! This and quercetin have become my besties

This DAO enzyme works quite well to prevent histamine reactions from food. However, for me personally another brand (which I won't mention here) works even better. I suppose it depends on your level of histamine intolerance and how many HDU's (units) you require for a single dose. For many people, this supplement may be more than adequate. In my experience you don't want to take more DAO than is necessary because it can make you a bit lethargic (similar to the feeling of Benedryl). So, more or more powerful is not always better. I really like the packaging and individual sealed blister packs to prevent exposure to oxygen and the like. If you have problems with histamine intolerance (or think you do), give this one a try. If this supplement does nothing at all, then you probably don't have a lack of DAO enzyme. It's worth the money.

This product is helpful in reducing the histamine reactions, but I need it at every meal and still have breakthrough rashes. I have not tried other histamine products other than homeopathic allergy tablets which I also take when I have the rashes.

Works well for histamine reaction from food, has helped me with flushing after eating. No side effects associated with its use so far.

A great help to me as I deal with too much histamine in my system.

Terrible reaction. Not sure why. I have histamine intolerance and this made me feel awful for 2 days. I seem to do better with beef kidney. Maybe porcine extract doesn't work for me. Just wanted to give a heads up.

Who would image that healthy foods like avocado, spinach, strawberries, kombucha, canned fish, etc. could have high levels of histamine in them? Certainly not me, until I read about histamine intolerance. The levels of histamine in these foods don't bother most people, but for people whose digestive system has been primed to react to histamine by chronic SIBO, MACS, or other digestive disorder, high histamine foods can cause a lot of bloating, discomfort, flushing, etc. Wait, what? Even some Lactobacilli produce histamine? No wonder I can't take probiotics or drink kombucha anymore! I'd recommend trying HistaHarmony to anyone who gets headaches from red wine, or feels bloated and ill after eating processed meat, cheese, avocado, tomatoes, spinach, or kimchi. Diamine oxidase (DAO) doesn't block histamine receptors the way antihistamines do (that's why antihistamines have so many side effects). Instead, DAO stays in your digestive tract, breaking down the histamine itself. A few years ago, there was only one company (Umbrellux) selling DAO. Nice that we have choices now! For me, HistaHarmony works as well as Umbrellux DAO, NaturDAO, and Histamine Digest, but at a lower price and without fillers. Don't be put off by the tiny pill vs. price - this isn't a case where size matters. Before DAO, I had gotten to the point that I was reacting to all foods, either nauseous, or crampy, or like my guts were going to explode. Two HistaHarmony before every meal (for me that's super fresh meats and veggies, low FODMAP, low histamine, no dairy, no grains, no yeast) lets me be OK after eating. Six HistaHarmony and I can have small amounts of say, red wine or sushi. This both a great relief and has let me feel like less of a food weirdo at social events. If you have food issues, give the Healthy Gut Company products a try. They are all good quality and backed by research.