Vitamin C toxicity is rare, but daily doses over 2,000 milligrams may cause unpleasant side effects like digestive issues, headache, and skin flushing.

Learn which supplement is best for preventing and treating respiratory viruses, how to take them, and side effects to watch ...

As pollution and fluctuating temperatures continue to challenge our immune systems, the common cold remains one of the most ...

Taking Vitamin C and calcium together improves gut calcium absorption and may also enhance bone and immune system health.

Some research suggests that vitamin C supplements may benefit people with type 2 diabetes, but more studies are needed to understand the effects and recommended dosage. Vitamin C (L-ascorbic acid) is ...

Both juices can help you get more antioxidants in your diet. Orange juice contains significant amounts of vitamin C and ...

You may have heard that using niacinamide and vitamin C together raises some safety concerns. Both ingredients boast brightening, smoothing, and antioxidant benefits—but do they belong in the same ...

A Delish editor shares her take on taking Emergen-C before travel and big events, and a dietitian explains what vitamin C can ...