Yangshengtang protein powder is not fake. It is a well-known big brand, and the quality of big brands is guaranteed. Recently, Yangshengtang collagen powder was sued for illegal addition. What is "d- mannitol"? Is there any harm in adding it to food? In this regard, experts interviewed by reporters yesterday believe that "d- mannitol" may not have potential safety hazards, but it must be used in accordance with the national standards for food additives.