Glucose syrup
Usually histamine free, depends on processing.Dextrose
The pure form of dextrose does not contain histamine.
Suitable
Most people with histamine intolerance tolerate this food well.
Dextrose is a simple sugar (glucose) and in its pure form does not contain histamine nor is it known as a histamine-releasing agent. It is therefore suitable for the histamine diet.
Safer alternatives
Suitable
unrefined cane sugar
Invert sugar
Usually well tolerated when consumed normally.