Medically reviewed by Alan Lucks | MD , Alan Lucks MDPC Private Practice - New York on January 17th, 2026
For vitamin K labeling purposes, 100% of the daily value was 80 g, but on 27 May 2016 it was revised upwards to 120 g, to bring it into agreement with the highest value for adequate intake
117-39-5 Appearance Solid Molecular Weight 302.24 Formula C 15 H 10 O 7 Color Light yellow to yellow SMILES OC1=C(C2=CC=C(O)C(O)=C2)OC3=CC(O)=CC(O)=C3C1=O Shipping Room temperature in continental US
STORY AT-A-GLANCE Persistent itching, digestive upset, and anxious behavior in pets could point to histamine intolerance a hidden cause that many overlook when allergies and diet changes don't solve the problem Histamine is a natural chemical that helps defend your pets body, but when it builds up too much, it can trigger itching, gut issues, breathing problems, and even behavior changes Gut damage, liver overload, certain medications, environmental allergens, and chronic stress can block your pets ability to break down histamine properly, making symptoms persist despite regular treatments High-histamine foods, such as aged cheeses, processed meats, fermented products, and certain types of fish, can worsen symptoms
Achievable but aggressive from a cost standpoint
