Glucose syrup
Usually histamine free, depends on processing.Chicory syrup
Caution
May cause symptoms in more sensitive people. Track your own reaction.
Chicory syrup (inulin) is a fermentable fiber. In people with histamine intolerance, it can promote intestinal fermentation, which leads to increased production of histamine in the digestive tract.
Safer alternatives
Suitable
Maple syrup
Acesulfame K