Vitamin C Day

Vitamin C Day is an American holiday dedicated to vitamin C. If you ask people what their most popular vitamin is, there’s a 90% chance they’ll say vitamin C. It is closely associated with citrus fruits and the cold season because of its reputation as an anti-cold vitamin. The holiday is celebrated annually on April 4.

History

The history of Vitamin C Day is only a few years old. The holiday was created in 2019 when SkinCeuticals, a brand that produces a line of skincare products, launched the initiative. It is dedicated not only to the beneficial properties of the vitamin but also to the successful creation of a way to deliver antioxidants from this vitamin into the skin, developed by the company’s experts.

Vitamin C was discovered in 1928 by chemist Albert Szent-Györgyi, and four years later, scientists were able to determine that a lack of ascorbic acid (another name for vitamin C) causes scurvy, a disease of the gums. As early as the 17th century, sailors used citrus fruits to prevent scurvy, even though they didn’t know the role of vitamin C.

Interesting Facts

• The average recommended dose of vitamin C for an adult is 90 mg. It is found not only in citrus fruits but also in potatoes, cabbage, tomatoes, sweet peppers, and rose hips.
• Vitamin C (like vitamin E) promotes the production of interferons—proteins secreted by the body in response to virus invasion—making it an important component in treating colds and strengthening immunity.
• A typical orange contains almost the entire daily recommended dose of vitamin C (about 75 mg on average).

How to Celebrate

Eat more citrus fruits on this day. Take ascorbic acid more often during colds to speed recovery, but avoid overdosing (taking more than 100 mg daily for long periods). Consider purchasing SkinCeuticals skincare products.

Spread the word about the holiday on social media. Ask others if they consume enough vitamin C each day.

When is Vitamin C Day in 2025?

Vitamin C Day is observed on April 4 each year.

Observations