XYMOGENHistDAO - DAO Enzyme Supplement to Supports Healthy Degradation of Food-Derived Histamine - Diamine Oxidase for Digestive Health 20,000 HDU Per Serving (60 Tablets)

I started having a histamine reaction from food and took a half of a pill. In 15-20 minutes my reaction stopped! Without this pill my reaction would go on for four miserable hours. I did not have any negative side effects from this pill. I am so thankful for this product and appreciate that it is made from natural ingredients.

Seems to work even better than the prior brand I tried. Small pill. Easy to take.

This is absolutely the gold standard in DAO supplements available on Amazon. I have tried several brands. They’re all kind of expensive, but nothing works like this one. I take it first thing on waking and wait 20 to 30 minutes for best effect. Love how small the pills are. Apparently the blister pack makes a difference? I don’t know why these work so much better. But this is the one you wanna get.

Always on time, love this product!

Works as described. Arrived on time. 3 stars as would prefer if the lightweight paper box were sealed in an outer package or envelope - weird to receive medication in the mail with no layer of protection. Too easy to tamper with. Box arrived smashed. Luckily the pills were ok.

Great value delivered on time as promised

My symptoms are much worse if I do not take this before my evening meal.

This product is derived from pork. I will not take a pork gland derived supplement. It’s also not returnable. I have no alternative but to throw it in the garbage