Folic acid
pantothenic acid (B5)
Vitamin B5 is generally well tolerated and is not considered a trigger for histamine issues.
Suitable
Most people with histamine intolerance tolerate this food well.
Pantothenic acid is an essential vitamin found naturally in many foods. There is no evidence suggesting it acts as a histamine liberator or inhibits the DAO enzyme.
Safer alternatives
Suitable
L-ascorbic acid (E300)
Ascorbic acid (vit. C synthetic)