Works great, if histamine issues are actually your problem.
I was sick for a few weeks before figuring out just what was wrong.  I was having more and more histamine reactions at random times and it became apparent that food was the cause, but it seemed to be almost all food.  After doing some reading, the foods with more histamines in them were what was most likely the cause... and due to all the ibuprofen I took last year after a car wreck, it made sense that the enzyme was depleted that helps the body process histamines.  I took a leap and ordered this stuff, hoping I had figured out the issue, and after taking the first capsule, it wasn't more than 30 minutes later I regained my intestinal fortitude and was able to get out of bed and do some things... and feel good!  I've taken 3 a day for 2 weeks now and have only had a minor issue due to one of the high histamine foods (tomato sauce), but it was much less severe than before.  I'm so thankful that this product exists, I'm not sure how I would have recovered!  Interestingly enough, one of the few things tested as allergic to (cats) do not make me itch anymore.
Rating: 5 stars