If you want to improve your immunity, you can supplement vitamins. Taking vitamins has gradually become a fashion and trend. Experts pointed out that the quantity and vitality of human body's weapons against foreign invasion, including interferon and various immune cells, are all related to vitamins. As for brands, they are not necessarily good in Japan. At present, there are many well-known brands in China, and the quality is also guaranteed. In terms of brand, 2 1 Jinweita, Yangshengtang, Vitamins, Jinerkang, Shancun, Golden Partner and Weicun are all good. I bought it from the top ten brand websites, hoping to help the landlord.