Summary and Conclusion

Abstract

Every animal produces vitamin C by themselves. The daily amount of vitamin C production in each animal is in grams, when converted to human body weight. In the urine of animals that synthesize vitamin C by themselves, there is 3–5 times more vitamin C compared to its blood concentration. Vitamin C is a representative antioxidant and its radical, the ascorbyl radical, has the least toxicity. Furthermore, vitamin C can regenerate toxic radicals to the original antioxidants. Vitamin C has a very important role as a cofactor in eight important enzymatic reactions that take place in the human body. Vitamin C has very important roles in protecting the human body, resulting in the following functions: prevention of atheroma formation, brain tissue protection from oxidative damage, antiviral function by immune enhancement, antiaging function by delaying frailty, hepatic protection function by immune modulation, anticancer functions, eye protection against sunlight, antiaging functions caused by sunlight in the skin, and functions reducing the somatic and mental damages caused by prolonged stress. The pharmacokinetic study of vitamin C in the humans tells us that it has a 6-h cycle in the human peripheral blood. Therefore, it is recommended to take it every 6 h, actually with every meal. One adverse effect is urinary stone. In conclusion, people are strongly recommended to take 2000 mg of vitamin C every meal, a total of 6000 mg of vitamin C per day.