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How Many Mg Of Vitamin C Is Too Much

Eating Too Many Citrus Fruits

Taking too much vitamin C could lead to kidney stones

Speaking of foods and beverages, some people consume lots of citrus fruits either out of habit or because of the aforementioned desire to avoid or fight off a common cold. While citrus fruits certainly taste great, eating too much of them is never a good thing.

For one thing, its almost impossible to eat so many citrus fruits that you overdose on vitamin C. Just be aware if taking a high dose vitamin c supplement you will not need to overdue the citrus fruit.

Honestly, its a lot easier to just take a vitamin with plenty of antioxidants and vitamins found in fruits instead of trying to eat berries and citrus fruits all day . Check out Livingood Dailys Greens Berry Supplement as a perfect example.

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  • Supplement your daily multivitamins with natural beetroot juice.
  • Help compensate for malnutrition.
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Is 3000 Iu Vitamin D3 Daily Too Much

Some people may need a higher dose, however, including those with a bone health disorder and those with a condition that interferes with the absorption of vitamin D or calcium, says Dr. Manson. Unless your doctor recommends it, avoid taking more than 4,000 IU per day, which is considered the safe upper limit.

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Is Too Much Vitamin C Harmful

Your body needs vitamin C, but megadoses can cause many digestive problems. Find out how much of the nutrient you really require.

While vitamin C is an essential nutrient, it’s possible to have too much of it.

Vitamin C is a water-soluble vitamin that supports normal growth and development and helps your body absorb iron. Because your body doesn’t produce or store vitamin C, it’s important to include vitamin C in your diet. For most people, an orange or a cup of strawberries, chopped red pepper, or broccoli provides enough vitamin C for the day.

For adults, the recommended daily amount for vitamin C is 65 to 90 milligrams a day, and the upper limit is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, megadoses of vitamin C supplements might cause:

  • Diarrhea

Is Taking A Huge Dose Of Vitamin C Bad For Me

Best Is 1000 Mg Of Vitamin C Too Much

Vitamin C is an important nutrient, but as the old saying goes too much of a good thing can be a bad thing.

After taking too much vitamin C, you may experience symptoms such as:

  • Diarrhea

So how much vitamin C is too much?

For adults, the daily upper limit of vitamin C is 2,000 mg. For teens, it’s 1,800 mg. For children, the upper limit depends on age, and it ranges from 400 to 1,200 mg per day.

In addition, vitamin C is water-soluble, making it hard for your body to store it with excess being secreted in your urine. So even if you’re adult and can handle the 1,000 mg in each vitamin C packet or pill, just know that your body can’t absorb more than about 400 mg. This means that most of the vitamin C in that supplement you’re taking just goes down your toilet .

All this to say, however, that getting the recommended amount of vitamin C is still a critical step in staying healthy, as this vitamin plays many important roles in your body. But, you don’t need to take a supplement to make that happen.

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What Does Vitamin C Do

Vitamin C has many roles when it comes to promoting health, such as:

  • Acting as an antioxidant, helping protect against free radical damage and slowing the effects of aging.
  • Counteracting the negative effects of sun damage, cigarette smoke, air pollution and other environmental stressors.
  • Supporting the immune system to protect against illnesses.
  • Helping form collagen and maintain connective tissue, including the skin, bones, joints and blood vessels.
  • Supporting eye health/vision and potentially reducing the risk for cataracts.
  • Helping reduce the risk of certain types of cancers and cardiovascular disease.
  • Facilitating absorption of iron.

Certain people can benefit from getting even higher amounts of vitamin C than the general population, including those who:

  • smoke or around secondhand smoke
  • people who eat a poor diet lacking vegetables and fruits
  • those with medical conditions, such as severe malabsorption, cancer and kidney disease

Researchers shows that vitamin C deficiency symptoms most often affects those with severe malnourishment, drug and alcohol abusers, or those living in poverty.

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Does Too Much Vitamin C Cause Side Effects

Vitamin C is a very important nutrient thats abundant in many fruits and vegetables.

Getting enough of this vitamin is especially important for maintaining a healthy immune system. It also plays an important role in wound healing, keeping your bones strong, and enhancing brain function .

Interestingly, some claim that vitamin C supplements provide benefits beyond those that can be obtained from the vitamin C found in food.

One of the most common reasons people take vitamin C supplements is the idea that they help prevent the common cold .

However, many supplements contain extremely high amounts of the vitamin, which can cause undesirable side effects in some cases.

This article explores the overall safety of vitamin C, whether its possible to consume too much, and the potential adverse effects of taking large doses.

Vitamin C is a water-soluble vitamin, which means it dissolves in water.

In contrast to fat-soluble vitamins, water-soluble vitamins do not get stored within the body.

Instead, the vitamin C that you consume gets transported to your tissues via body fluids, and any extra gets excreted in urine .

Since your body does not store vitamin C or produce it on its own, its important to consume foods that are rich in vitamin C daily .

However, supplementing with high amounts of vitamin C can lead to adverse effects, such as digestive distress and kidney stones.

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Taking Supplements To Fight A Cold

Lots of people, for instance, take vitamin C supplements in order to prevent themselves from coming down with a common cold. While vitamin C can support your immune systems effectiveness, its by no means a surefire method of preventing colds or illness.

Be sure to take a well rounded approach of vitamin d, zinc, clean eating, and rest to help your body recover. No one supplement is a magic cure. A whole body approach is key.

Food Labeling Reference Tables

How much Vitamin C is too much?

Daily Values used by the FDA for the following macronutrients are Daily Reference Values.

The FDA issued a final rule on changes to the facts panel on May 27, 2016. The new values were published in the Federal Register. The original deadline to be in compliance was July 28, 2018, but on May 4, 2018, the FDA released a final rule that extended the deadline to January 1, 2020, for manufacturers with $10 million or more in annual food sales, and by January 1, 2021, for manufacturers with less than $10 million in annual food sales. During the first six months following the January 1, 2020 compliance date, the FDA worked cooperatively with manufacturers to meet the new Nutrition Facts label requirements and did not focus on enforcement actions regarding these requirements during that time. Due to lengthy shelf-life on certain food items, products containing old or new facts panel content may be on market shelves at the same time.

The following table lists the old and new DVs based on a caloric intake of 2000 kcal , for adults and children four or more years of age.


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Tolerable Upper Intake Level

The Institute of Medicine’s Food and Nutrition Board has set the tolerable upper intake level, or UL, of vitamin C for an adult over 19 years old at 2,000 milligrams per day. This means that unless you regularly consume more than 2,000 milligrams of vitamin C each day — including your intake from both food and supplements — you should not experience any potentially harmful side effects.

Reduces Your Risk Of Chronic Disease

Vitamin C is a powerful antioxidant. The antioxidant properties of vitamin C work to reduce or prevent inflammation. Many chronic illnesses like arthritis are the result of chronic inflammation.

One cause of inflammation is the presence of free radicals in the body. Free radicals come from the breakdown of some foods and from toxins that get introduced to the body through things like tobacco smoke. When free radicals accumulate in the body, they lead to what is called oxidative stress, and this causes unhealthy inflammation. Vitamin C binds with free radicals and helps eliminate them.

Research shows that consuming vitamin C increases blood antioxidant levels by as much as 30 percent. This helps the body fight inflammation and the chronic diseases that can come from inflammation.

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What Does The Department Of Health And Social Care Advise

You should be able to get all the vitamin C you need by eating a varied and balanced diet.

If you take vitamin C supplements, do not take too much as this could be harmful.

Taking less than 1,000mg of vitamin C supplements a day is unlikely to cause any harm.

Page last reviewed: 03 August 2020 Next review due: 03 August 2023

How Much Vitamin C Is Too Much

Best Is 1000 Mg Of Vitamin C Too Much

Since vitamin C is water-soluble and your body excretes excess amounts of it within a few hours after you consume it, its quite difficult to consume too much.

In fact, it is nearly impossible for you to get too much vitamin C from your diet alone. In healthy people, any extra vitamin C consumed above the recommended daily amount simply gets flushed out of the body .

To put it in perspective, you would need to consume 29 oranges or 13 bell peppers before your intake reached the tolerable upper limit (

19 ).

All the adverse effects of vitamin C, including digestive distress and kidney stones, appear to occur when people take it in mega doses greater than 2,000 mg .

If you choose to take a vitamin C supplement, it is best to choose one that contains no more than 100% of your daily needs. Thats 90 mg per day for men and 75 mg per day for women .


Its nearly impossible to consume too much vitamin C from food. However, if youre supplementing with this vitamin, you can minimize your risk of getting too much by taking no more than 90 mg per day if youre a man, or 75 mg per day if youre a woman.

Vitamin C is generally safe for most people.

This is especially true if you get it from foods, rather than supplements.

Individuals who take vitamin C in supplement form are at greater risk of consuming too much of it and experiencing side effects, the most common of which are digestive symptoms.

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Best Natural Ingredients For Your Skin

Vitamin C serums can be topically applied to the skin and may provide benefits such as protection against damage caused by UV exposure, including collagen damage and wrinkling. And while its no replacement for sunscreen, a vitamin C serum routinely applied before sun exposure may help prevent premature aging of the skin. It may also help protect against pigmentation issues by interfering with melanin synthesis. Youll see many options of vitamin C serums including ones with additional ingredients, such as vitamin E or hyaluronic acid.

Is Vitamin C Good To Lower Blood Pressure

According to scientists from Johns Hopkins University School of Medicine, high doses of vitamin C an average of 500 mg per day may produce small reductions of blood pressure. Vitamin C may act as a diuretic, removing excess fluid from your body. This may help lower the pressure within your blood vessels.

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Whats The Recommended Intake

The Institute of Medicine has developed a set of reference values for specific nutrient intake levels, including for vitamin C.

One set of guidelines is known as the Recommended Dietary Allowance and considers average daily nutrient intake from both foods and supplements.

RDA recommendations for specific gender and age groups should meet the nutrient needs of 9798% of healthy individuals (

Here are the RDAs for vitamin C :

Life stage
Adult women 75 mg
Adult men 90 mg
Pregnant women 85 mg
Breastfeeding women 120 mg

In addition to the RDA recommendations for vitamin C, the Food and Drug Administration has issued a recommended Daily Value .

The DV was developed for food and supplement labels. It helps you determine the percentage of nutrients in a single serving of food, compared with the daily requirements. On food labels, this is displayed as %DV .

Currently, the recommended DV for vitamin C for adults and children aged 4 and above is 60 mg regardless of gender. However, in January 2020, this will increase to 90 mg .


The RDA for Vitamin C ranges from 1575 mg for children, 75 mg for adult women, 90 mg for adult men, and 85120 mg for women who are pregnant or breastfeeding.

Vitamin C is essential for overall health and wellness, and the nutrient may particularly benefit certain conditions.

The vitamin is especially helpful for immune health, as it supports your immune systems cellular function .

Almost All Ascorbic Acid Is Made In China

How Much Vitamin C Should I Take ? |Dr.Michael Greger

To be clear, we are not inferring or implying that products using vitamin C made in China are less safe. With proper manufacturing processes and quality control, the molecule of ascorbic acid will be identical regardless of where it was made.

Still though, many consumers ourselves included simply prefer to buy foods and supplements made in America, UK, and other countries which have a better reputation for both quality control and human rights.

How much is made in China? The New York Times reports 80% and that was years ago.

That percentage is likely even higher today.

Now heres the real disgusting part. A dirty secret in the supplement world is that when a product says made in the USA, that doesnt mean the active ingredient are from America.

A company can legally claim to be US-made if the actual product capsule, tablet, etc. is manufactured in this country. As far as where the active ingredients come from, that can be anywhere in the world and theres no legal requirement to disclose it to you.

In fact, many supplement brands refuse to cite the country of origin, claiming its a trade secret. Yeah right, one can guess what their real motive is for not telling you they dont want to tell you its coming from China!

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The Recommended Dietary Allowance

The recommended dietary allowance for vitamin C is based on the amount of vitamin C intake necessary to maintain neutrophil vitamin C concentration with minimal urinary excretion of vitamin C and is proposed to provide sufficient antioxidant protection . The recommended intake for smokers is 35 mg/day higher than for nonsmokers, because smokers are under increased oxidative stress from the toxins in cigarette smoke and generally have lower blood concentrations of vitamin C .

Table 2. Recommended Dietary Allowance for Vitamin C

Life Stage

Too Much Vitamin C May Cause Digestive Symptoms

The most common side effect of high vitamin C intake is digestive distress.

In general, these side effects do not occur from eating foods that contain vitamin C, but rather from taking the vitamin in supplement form.

Youre most likely to experience digestive symptoms if you consume more than 2,000 mg at once. Thus, a tolerable upper limit of 2,000 mg per day has been established (


Ingesting more than 2,000 mg of vitamin C per day may lead to gastrointestinal upset, including symptoms like diarrhea and nausea.

Vitamin C is known to enhance iron absorption.

It can bind to non-heme iron, which is found in plant foods. Non-heme iron is not absorbed by your body as efficiently as heme iron, the type of iron found in animal products .

Vitamin C binds with non-heme iron, making it much easier for your body to absorb. This is an important function, especially for individuals who get most of their iron from plant-based foods .

One study in adults found that iron absorption increased by 67% when they took 100 mg of vitamin C with a meal .

However, individuals with conditions that increase the risk of iron accumulation in the body, such as hemochromatosis, should be cautious with vitamin C supplements.

Under these circumstances, taking vitamin C in excess may lead to iron overload, which can cause serious damage to your heart, liver, pancreas, thyroid, and central nervous system .

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