Natural vitamin E is also known as d-α tocopherol academically. The key to judge whether vitamin E in the product is natural or synthetic is to look at the content of d-α tocopherol, that is, the content of VE. The health care function of synthetic vitamin E is far less than that of natural vitamin E. 。

China's national laws and regulations have a clear definition of pure natural vitamin E:

China Pharmacopoeia stipulates that the content of pure natural vitamin E :D-α- tocopherol shall not be less than 90%, and the United States Pharmacopoeia stipulates that it shall not be less than 96%.

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At present, it seems that only natural vitamin E in Lion is higher than 96%.

Vitamin E in Yangshengtang says that it contains 97.5 mg of d-α- tocopherol (250 mg per capsule), but it is not obvious on the back that it contains 39 g of d-α- tocopherol per 100 g, and the purity is only 39%.