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)

Works great for my son.

Works well for Mast cell issues

Great product. Really works!

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).

I need this as I do not make enough DAO to process histamine. These allow me to eat many more foods without anaphylaxis

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.

Saved my life and quick delivery

My food allergies got even worse. I am allergic to something in those pills.Also, it was impossible to remove the pills from the container. After much probing, a bunch of them came out. It was then impossible to put them back.