Medicinal VC vitamin C can not be taken frequently, but can be taken in moderation when catching a cold. Vitamin C in Yangshengtang is natural and can be eaten often, but it can also be eaten after a while. It is a kind of health-care nutrient, and most people usually use it to maintain skin or beauty. Renhetang Health Pavilion in Taobao Store sells natural VC of Yangshengtang, and now it is full of postage. I recommend it to you and wish you success in whitening.