How much vitamin C should I take when I have a cold? | Exercise.com Learn: Your Fitness Business Resource

How much vitamin C should I take when I have a cold?

Tyler Spraul is the director of UX and the head trainer for Exercise.com. He has his Bachelor of Science degree in pre-medicine and is an NSCA-certified strength and conditioning specialist. He is a former All-American soccer player and still coaches soccer today. In his free time, he enjoys reading, learning, and living the dad life. He has been featured in Shape, Healthline, HuffPost, Women's...

Full Bio →

Written by

UPDATED: Aug 25, 2020

Advertiser Disclosure

It’s all about your brand. Let us do the heavy lifting.

Advertiser Disclosure: We strive to help you make confident fitness software decisions. Comparison shopping should be easy. Our partners do not influence our content. Our opinions are our own.

Editorial Guidelines: The Editorial Team at Exercise.com is dedicated to providing fair, unbiased information about the fitness industry. We update our site regularly and all content is reviewed by credentialed fitness experts.

Get the Basics...

  • Vitamin C is an antioxidant and a vitamin that is important for a lot of functions in the body.
  • For normal, healthy adults, the daily recommended amount is 75 mg for women and 90 mg for men.
  • If you have a cold or other illness you are trying to fight off, there are increased recommended amounts.

Vitamin C has long been touted as an important vitamin for keeping you healthy.

In the cold season, it seems to be even more popular and it is recommended that you increase your daily dosage of vitamin C, often in the form of a supplement.

Although vitamin C is important for you to take every day, a higher dose may help you when your body is fighting off something, such as a cold.

Besides fighting off colds, vitamin C has a number of other benefits.

Let’s look at some questions and concerns about vitamin C such as health benefits and safety.

Don’t forget that supplementing with vitamin C is only one way to keep your body healthy; exercise matters, too. Sign up for an Exercise.com PRO plan today for access to workout plans, training logs, and more.

What Is Vitamin C?

Vitamin C is an antioxidant and a vitamin that is important for a lot of functions in the body.

It is a water-soluble vitamin, which means that it can dissolve in water and can be absorbed and transported with water.

This is different from fat-soluble vitamins, which need fat in order to dissolve and be absorbed.

Vitamin C is available and stable in a number of forms, including tablets and powdered forms. It can be destroyed by cooking and food processing and it is easily oxidized.

For more information about vitamin C, you should visit the USDA’s Nutrition website.

What Are the Health Benefits of Vitamin C?

Besides possibly being able to fight off colds and other infections, vitamin C has a number of important functions in the body. As an antioxidant, vitamin C can help prevent cancer by preventing carcinogens to form in the GI tract as well as in foods.

Vitamin C’s antioxidant activity can decrease DNA damage from oxidation, protein damage from oxidation, and lipid peroxidation. This means that it can help decrease LDL cholesterol and increase HDL cholesterol in your body, which may result in a lower risk of atherosclerosis.

Vitamin C is important in the formation of collagen, which means it helps wounds heal faster and maintains the structure of connective tissues and skin. Vitamin C is essential for certain enzyme reactions in the body, including those that produce norepinephrine and serotonin.

Get More Out of Your Health and Fitness Routine. Go PRO!

Sign Up

What Are the Sources of Vitamin C?

Vitamin C can be found in a variety of fruits and vegetables. Citrus fruits, like tangerines, grapefruit, oranges, limes, and lemons, are especially high in vitamin C.

Vegetables that contain vitamin C include tomatoes, red and green peppers, and leafy green vegetables such as collard greens and spinach. Be aware that cooking food too much can decrease vitamin C levels in food.

Along with food sources, you can find vitamin C supplements as well as some unusual products that contain vitamin C such as tea and cough drops.

How Safe Is Vitamin C?

Vitamin C is very safe. If you get it through food sources there is very little chance of overdosing.

Even if you take supplements of vitamin C, you shouldn’t notice any side effects as long as you take the daily recommended dosage.

Even if you take more than the daily recommended dose, your body is usually able to flush out the extra amount so that you don’t get a toxic buildup of vitamin C in your body.

Extremely high amounts of vitamin C are considered to be more than 2,000 mg daily for adults. You may notice certain side effects such as diarrhea, nausea, and kidney stones.

How Much Vitamin C Should Be Taken to Fight off a Cold?

For normal, healthy adults, the daily recommended amount is 75 mg for women and 90 mg for men. For young children up to 3 years of age, the recommended amount is 15 mg per day and is 25 mg per day for children between the ages of 4 and 8.

In cases of pregnancy and breastfeeding, the daily recommendations are higher. For pregnant women, the recommended dosage is 85 mg and for those breastfeeding, it is 120 mg per day.

If you have a cold or other illness you are trying to fight off, there are increased recommended amounts. For both men and women, you can have up to 2000 mg per day.

For children 3 and under, the upper limit is 400 mg per day and for those 4 to 8 years of age, the upper limit is 650 mg. For women who are either pregnant or breastfeeding, up to 2,000 mg per day should be ok.

Frequently Asked Questions (FAQ)

Do I have to take vitamin C supplements?

Unless your doctor has instructed you to take vitamin C supplements, you do not have to take them.

Are vitamin C supplements safe?

Whether or not vitamin C supplements are safe to take depends on a number of factors. Learn more about the safety of supplements here.

What supplements do I need to take?

No one can answer that aside from your doctor. To learn more about the various supplements that doctors commonly recommend, check out this article.

Keep your body healthy by supplying it with the nutrients it needs and by engaging in routine exercise. Go PRO today for access to certified personal trainers, workout plans, and more. 

Learn more about Exercise.com Fitness Business Management Software.

Schedule your demo today.