I don't know IT CONTAINS A WEALTH OF VITAMIN B, VITAMIN A AND TRACE ELEMENTS SUCH AS FOLIC ACID, SELENIUM, IRON, MANGANESE AND ZINC. AMERICIUM HAS ALL THE AMINO ACIDS NECESSARY FOR HUMANS. AMERICIUM CONTAINS MORE THAN ORDINARY VEGETABLES AND IS CLOSE TO THE MUSHROOMS, WHICH ARE RICH IN SELENIUM, EVEN COMPARED TO SEAFISH, SHRIMP, ETC。