I'm very sorry to tell you that Chlorella is generally not available in hospitals. Because at present, under China's medical system, hospitals and doctors are not allowed to recommend or sell health food or health food. You must look up more information about these products online. Chlorella, also known as green algae, contains rich and comprehensive nutrients, which has a good comprehensive role in preventing health care and supplementing nutrition. Moreover, it is suitable for all ages. I suggest you buy Chlorella with excellent quality. Otherwise, the strong ability of Chlorella to adsorb toxins will be ineffective.