Perhaps the best-known and most widely promoted use of high-dose vitamin C is to prevent or treat the common cold. The bulk of the evidence shows that high-dose vitamin C will, at most, shorten a cold by one day. In ordinary circumstances, vitamin C appears to have no preventive value, although a few studies have reported a 50% reduced risk of developing colds among people taking vitamin C in extreme circumstances — for example, skiers, marathon runners, and soldiers working in sub-Arctic conditions. When it comes to vitamin C, a little bit goes a long way — which is to say, it’s not all that difficult to get your recommended daily amount. For example, one medium orange has about 80 milligrams of vitamin C, which accounts for much of your daily intake. When shopping for a vitamin C supplement, you’ll want to consider quality, dose, and price. You’ll also want to decide on the form of supplement you’re interested in, such as chewable tablets or a powder. Quality

Another analysis of 13 studies looked at the effects of taking at least 500 mg of vitamin C daily on risk factors for heart disease, such as blood cholesterol and triglyceride levels. We’re mostly talking about the kind of vitamin C that you find in foods, but it’s worth noting that topical creams and serums made with vitamin C can do all kinds of good things for your skin. They help slow signs of aging, reduce dark under-eye circles and even bolster the effects of sunscreen. (Psst: You are wearing sunscreen, aren’t you? Hint, hint.) Other possible benefits Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Institute of Medicine. Accessed 11/16/2021. Mahmoud A, et al. Beneficial effects of citrus flavonoids on cardiovascular and metabolic health. Oxid Med Cell Longev. 2019;2019:5484138. Vitamin C — Fact sheet for health professionals. Office of Dietary Supplements. https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/. Accessed Oct. 11, 2020.NOW Vitamin C-1000 je proizveden po tehnologiji počasnega sproščanja (2 h). Formuli je dodan šipek. Vitamin C tablete Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. 8. Arch Ophthalmol. 2001;119(10):1417-1436. doi:10.1001/archopht.119.10.1417 Additionally, a systematic review found that vitamin C supplementation was effective in lowering blood pressure in people with hypertension ( 5).

Hurrell R, Egli I. Iron bioavailability and dietary reference values. Am J Clin Nutr. 2010;91(5):1461S-1467S. Carr AC. Vitamin c in pneumonia and sepsis. In: Chen Q, Vissers MCM, eds. Vitamin C: New Biochemical and Functional Insights. Boca Raton (FL): CRC Press; 2020.115-135. If you have low iron levels, consuming more vitamin-C-rich foods or taking a vitamin C supplement may help improve your blood iron levels. SUMMARY Studies suggest that oxidative stress and inflammation near the brain, spine, and nerves (altogether known as the central nervous system) can increase the risk of dementia ( 28). Vitamin “see” indeed: This antioxidant is thought to help ward off cataracts (a clouding of the lens of your eye) and slow the progression of age-related macular degeneration (AMD), a condition that causes people to lose their central vision.

Different Types of Vitamin C Supplements

Second, vitamin C helps these white blood cells function more effectively while protecting them from damage by potentially harmful molecules, such as free radicals.