Taking 1000 mg of vitamin C plus 10 mg of zinc together is safe and doesn't cause bad side effects when used to treat colds, according to two medical studies.

Taking vitamin C and zinc together might help you feel better faster when you have a cold compared to taking a fake pill.

Taking vitamin C and zinc together works better than a fake pill at reducing runny nose symptoms when you have a cold, based on a review of 94 people across two studies.

Taking vitamin C and zinc together might help shorten how long your nose runs when you have a cold, but studies haven't proven it definitely works.

Taking vitamin C pills every day might make your colds less severe, according to some studies that looked at healthy people.

Taking vitamin C pills every day doesn't really help prevent colds for most people, according to studies with thousands of participants.