Hello, Amway's vitamin C is a nutritional supplement food, which is extracted from plants, not medicine, and it is also different from medicinal VC, which contains unique plant factors. The main function of VC is to improve human immunity and whiten skin. Nutrilite's VC doesn't have a side effect, but if it's not a special case, the dosage doesn't need too much. Normal people take 3 capsules a day, and you can take 6 capsules in this case. Also, physical conditioning needs a process, and the root cause left over for many years may not be effective immediately in one month, but it is definitely good for your health.