Before using this product, the main components to be aware of are milk proteins, pistachio, soy lecithin and sweeteners including sorbitol. Milk protein concentrate and whey protein concentrate are both dairy-derived, so this bar is not suitable for someone avoiding milk proteins. Pistachio is a tree nut, so if you have a nut allergy, the pistachio component is directly relevant. Soy lecithin is an emulsifier often used in chocolate coatings, and it matters if you avoid soy-derived ingredients.
Because the bar also contains sugar alcohols in the form of sorbitol, people who are sensitive to sugar alcohols may want to start with a modest amount. Eating a large number of such bars at once could cause digestive discomfort in sensitive individuals. The source note specifically says that if you are sensitive to sugar alcohols, start modestly, and if you follow a specific eating plan or avoid certain allergens, check the full ingredient list before use.
The full ingredients on the packaging are the only reliable source for your individual situation. If you have a diagnosed allergy or a medical condition that affects your diet, consult a specialist before adding this product to your routine.