Tomson Bianjian's vitamin C tablets are fermented, and Yangshengtang's vitamin C is extracted from natural West Indian cherries, so Tomson Bianjian's vitamin C is not as good as Yangshengtang's vitamin C, but Tomson Bianjian also has two other products, namely vitamin C chewable tablets (a new product just listed, with West Indian cherry powder added) and West Indian cherry tablets (with cherry powder imported from Brazil as raw material, each containing natural vitamin C50mg, and also providing vitamins A and E). I hope it will be helpful for you to buy products!