HistoDAO™ is a patented enzyme formula containing diamine oxidase (DAO)—the main enzyme responsible for the degradation of ingested histamine. This enzyme has been clinically tested and found to break down food-derived histamine in the digestive tract. DAO is not absorbed and does not have systemic activity. HistDAO does not manage or address antibody-related or IgE-related food allergies.*
HistDAO helps me sleep without any respiratory issues. It also calms the itchiness around my eyes so that I don’t have to use the prescription eye cream.
What our customers are saying
from 3076 reviews
ProOmega
Order received timely. I appreciate the good service. Thank you.
I needed this large order of supplements in a hurry bc we were heading south.They had EVERYTHING I needed! Everything came. Great response always! Thank you, Mike💪💕❤️💕
Hi. Just starting using the drops 2 days ago, so can't give a true review. My nutritionist touts the drops highly and says that I "need them", so looking forward to seeing a difference over time. Thank you
We have been using this product for our dog for quite some time & it has been very effective. This was also one of the lowest prices I’ve found for it. I asked a question about the delivery and received a prompt and courteous reply. It’s difficult to find such quality customer service these days.