Designs 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)

This enzyme is a game changer if you have a histamine intolerance. I take one before I eat at all restaurants, because they all seem to serve something I can’t eat and it’s usually an ingredient I can see. I don’t take anymore risks, I pop one of these in my mouth and it stops any possible reaction I would suffer due to my histamine intolerance.

This product works very well

Works great for my son.

Works well for Mast cell issues

I honestly don't know if this even really does anything. I couldn't eat whatever histamine foods I wanted while taking it, got tired of paying 70 bucks every few weeks, and now eat exactly what I was eating when I took it without issue. (Still have to be low-histamine, just not as broke).

Great product. Really works!

Great. Love the dispenser too. I took one star off for being expensive, especially when you rely on taking 2-3 of these per day to get by.

These tiny pills seem to make a difference in my skin and digestive system after I eat particularly high histamine foods. I have been taking two before meals.The only thing I was not happy with was the package was taped closed with a type of perforated tape and that was the only thing that sealed the product. Once I opened the outer box (that had the not very secure tape), the actual dispenser didn't have anything protecting it from being used. It needs to be better protected so that you know it hasn't been tampered with before it gets to you.