Yes, some people may notice bloating, gas or digestive discomfort if they take too much Jerusalem artichoke syrup at once. The main reason is its inulin content. Inulin is a prebiotic soluble fibre that is not digested in the small intestine; it travels to the colon, where gut bacteria ferment it. This is a normal feature of fermentable fibres, but the amount and individual tolerance matter.
If your usual diet is low in fibre, introduce this syrup gradually rather than taking several spoonfuls immediately. A small amount stirred into tea, porridge or yogurt is a more cautious starting point than using it heavily as a topping. You can then adjust based on comfort, especially over the first few days.
People with sensitive digestion, FODMAP intolerance or fructose malabsorption should be particularly careful, because the source notes that large amounts may cause gas or bloating and that the syrup naturally contains some fructose. If you are pregnant, breastfeeding, managing a chronic condition or using medication, ask a doctor or pharmacist before adding larger amounts of new prebiotic foods to your diet.