It's fake. Because of its widespread concern and recognition, some fake and shoddy products have appeared in the market. Oyster powder is usually made from fresh oysters. Using stale or poor quality raw materials will affect the quality and effect of oyster powder. In addition, some unscrupulous merchants may add other substances to cover up the defects of oyster powder itself or increase its actual content, which will also pose a potential threat to consumers' health. In order to avoid buying fake and shoddy oyster powder, consumers should choose formal channels to buy it, pay attention to information such as packaging, labels and production date, carefully verify it during the purchase process, and contact merchants or complaint departments in time when problems are found.