Our supplements can only help with the non-hereditary fructose intolerance, which is also named fructose malabsorption. This is a problem with the absorption of fructose, which causes gastro-intestinal complaints. When you have hereditary fructose-intolerance, you can absorb fructose, but then in the liver the fructose-1-phosphate will be accumulated. Those people need to avoid the intake of fructose completely, and our supplements can't help with this unfortunately.