It's true. Because Tik Tok's Yangshengtang vitamins are officially guaranteed. However, the vitamins in Yangshengtang are not very good, but the advertising voice is relatively loud. Strictly speaking, vitamin E in Yangshengtang is not natural vitamin E, and ve synthesized abroad is only used as feed additive at present. Synthetic ve is made of petrochemical by-products and contains chemical intermediates, which is a potential threat to human health and is not suitable for long-term use.