The evidence regarding whether vitamin C helps with colds is mixed. Some studies suggest that taking vitamin C supplements may reduce the duration and severity of cold symptoms, while other studies have found no significant effect.
However, it is generally accepted that vitamin C is important for overall immune system function and may have a role in preventing infections. Vitamin C is an antioxidant that helps protect cells from damage, and it is also involved in the production of collagen, which is important for the health of skin, bones, and other tissues.
While taking vitamin C supplements may not be a cure for colds, it is still a good idea to ensure that you are getting enough vitamin C through your diet. Foods that are high in vitamin C include citrus fruits, strawberries, kiwi fruit, red and green peppers, broccoli, and tomatoes.