I take Naturdao and it has made a massive difference for me. Amazon has the 1,000,000 HDU version (taken 5 minutes before a meal). Someone here recently made me aware of a 3,000,000 HDU version that is taken 20 minutes before a meal.
NaturDAO. I haven't tried any other brands, but honestly I haven't needed to. This one has been a life saver for me.
Here is the link https://www.amazon.com/NATURDAO-Vegetable-Deficiency-Histamine-Intolerance/dp/B08R5ZVG4L
While the Naturdao pills work, liverwurst for lunch has been working for me too.