Dextrose
The pure form of dextrose does not contain histamine.Sugar (cane, white)
Suitable
Most people with histamine intolerance tolerate this food well.
Pure sugar does not contain histamine or histamine-releasing substances. It is a tolerated sweetener on a histamine diet in reasonable amounts.
Safer alternatives
Suitable
Glucose syrup
Usually histamine free, depends on processing.Icing sugar