Which brand of vitamin C is cheap and effective?
Yangshengtang's cherry-flavored Vc chewable tablets have a particularly good effect, but they are more expensive, nearly 80%. Now I am taking Guo Weikang sugar-free fruit-flavored Vc buccal tablets, 29.9 bottles, 55 tablets, one tablet a day. What I bought was orange, which was bought in the supermarket. It felt good, cheap and food-saving. My friend also drinks Nongfu Spring's new C 100.