How much vitamin C you need per day depends on your age, sex, pregnancy and lactation status, and if you smoke. Here are the guidelines and general limits.

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

Could vitamin C help fight tumor cells? That's what a new study suggests, renewing a long-controversial theory. Tests in mice and in human patients suggest that a special intravenous form could help ...

Taking vitamin C and D together is generally safe if you stay within the recommended doses. Vitamin C and D supplements may support your immune health and strengthen your bones. Higher vitamin C or D ...

Acne affects approximately 50 million Americans annually, creating not just physical blemishes but emotional distress that can impact confidence and quality of life. While countless treatments promise ...

Supplements that can help you stay physically and mentally healthy during the winter include vitamin D, zinc, vitamin C, and ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? To get the scoop on niacinamide and vitamin C, including what each of them ...