Dextrose
The pure form of dextrose does not contain histamine.Vanillin sugar
Vanillin sugar is usually safe.
Suitable
Most people with histamine intolerance tolerate this food well.
Vanillin sugar is made from sugar and vanillin. It is not a fermented product and usually does not contain high amounts of histamine or histamine-releasing substances.
Safer alternatives
Suitable
Glucose syrup
Usually histamine free, depends on processing.Icing sugar