BIOGENA ONE is designed with excellent tolerability in mind. It’s even suitable if you have histamine intolerance.
Plus, the fructose, sorbitol, and similar sugar content is very low—so even mild intolerances to these substances are usually no problem.
That said, if you have a strong allergy or intolerance to any ingredient, it’s best to avoid the product. When in doubt, check with your doctor first.