Vitamin C is generally safe come take also at high dosages. However, world may sometimes experience mild side effects, such as digestive discomfort. Rarely, much more serious side results can occur.

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Vitamin C is vital vitamin because that the human body. The is an antioxidant, and also it helps v a variety of crucial processes, consisting of lowering blood pressure, fighting inflammation, and creating collagen.

In this article, we look in ~ the encourage upper boundaries of vitamin C intake, feasible side impacts of taking as well much, and other warnings.


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Share on PinterestIt is normally safe to generally eat foodstuffs high in vitamin C.
Frequently eating foods items high in vitamin C have to not command to any kind of health issues. Acquisition too much vitamin C with supplements can, however, reason side effects.

In adults, the encourage dietary pin money (RDA) of vitamin C is 90 milligrams (mg) because that males and 75 mg for females.

Adults that take much more than 2,000 mg that vitamin C every day may experience side effects.

When a human takes more than the recommended limit of vitamin C, they might experience mild cradle disturbances. These can take place if the vitamin C the the body does not absorb irritates the cradle tract.

Common mild side impacts of too lot vitamin C include:

nauseastomach crampingbloatinggeneral abdominal muscle discomfort

The body does no absorb every one of the vitamin C the it it s okay from supplements.

For example, if a human being takes 30–180 mg that vitamin C every day, your body absorbs about 70–90% of this vitamin. If a person takes an ext than 1 gram (g) of vitamin C every day, the human body absorbs less than 50% of the vitamin, which reduces the risk of an adverse side effects. The excess leaves the body in the urine.


As vitamin C can cause unpleasant symptom if a person takes as well much, the Food and Nutrition plank have established “tolerable upper intake levels.”

According to the Office of diet Supplements (ODS), the top limit because that vitamin C intake in human being aged 19 years and also over is 2,000 mg in males and females. The limit stays the very same for pregnant or breastfeeding women.

The upper everyday vitamin C levels for children and infants space as follows:

400 mg for babies aged 1–3 years650 mg for children aged 4–8 years1,200 mg for children aged 9–13 years1,800 mg for adolescents aged 14–18 years1,800 mg in pregnant or breastfeeding teenagers aged 14–18 years

There space exceptions to this limits, i beg your pardon only apply if a who doctor has not stated a various intake. Some civilization may have to take larger amounts of vitamin C for medical treatments.


Doctors think that too lot vitamin C supplementation could result in a human excreting the compounds oxalate and also uric mountain in your urine. These compounds can lead come kidney stone formation.

The authors of a instance study in the newspaper Kidney Internationalreported the a woman arisen kidney stones after taking 4 g or much more of vitamin C every day because that 4 months.

However, researchers have actually not conducted any larger scale studies on vitamin C intake and also kidney stone formation. They do know that world who have a history of kidney stones are an ext likely to type them if they take large amounts the vitamin C, follow to the ODS.

Nutrient imbalances

Another concern concerning excessive vitamin C entry is the it have the right to impair the body’s capability to process other nutrients.

For example, vitamin C may reduce the levels of vitamin B-12 and also copper in the body.

The visibility of vitamin C can additionally enhance iron absorption in the body, which could lead to excessively high levels.

Cause bone spurs

According come the Arthritis Foundation, one study found that the presence of an extremely high vitamin C levels in the body raised the likelihood that a person emerging painful bone spurs.

However, the foundation also cited a research study study that uncovered that civilization with low levels the vitamin C had a greater risk of developing rheumatoid arthritis, a pains inflammatory joint condition.

These result emphasize the require for ideal vitamin C supplementation that provides neither too much nor also little.

Impair the effectiveness of niacin-simvastatin

Evidence suggests that taking vitamin C supplements may impair the body’s capability to rise high density lipoprotein (HDL) cholesterol in civilization taking the combination drug niacin-simvastatin. This medicine combines the vitamin niacin v the statin simvastatin (Zocor), and people take it it to treat high cholesterol.

Doctors consider HDL cholesterol the “good” cholesterol because it reduce the lot of harmful cholesterol in the blood.

If a human takes vitamin C supplements and niacin-simvastatin, they must talk to your doctor around ways to do each more effective. Doctors carry out not understand whether vitamin C additionally affects the capability of other medicines similar to Zocor.


A person’s body cannot make vitamin C, so human being need come eat enough foods that contain vitamin C to fulfill their daily needs. If someone is at threat of a vitamin C deficiency, they have the right to take vitamin C supplements.

The ODS recommend aiming because that the complying with RDA that vitamin C each day:

AgeMaleFemale
1–3 years15 mg15 mg
4–8 years25 mg25 mg
9–13 years45 mg45 mg
14–18 years75 mg65 mg
19+ years90 mg75 mg

People that smoke have to take 35 mg an ext vitamin C every day 보다 those who execute not smoke.

During pregnant or as soon as breastfeeding, ladies should gain the complying with levels that vitamin C every day:

14–18 years: 80 mg during pregnancy and 115 mg once breastfeeding19 years and also older: 85 mg during pregnancy and 120 mg as soon as breastfeeding

There is not enough research to suggest an RDA for vitamin C in those younger 보다 1 year of age. Together a result, the ODS administer an “adequate intake,” i m sorry is the amount that is likely to be sufficient:

40 mg for babies age 0–6 months50 mg for infants aged 7–12 months

Some physicians advocate women taking vitamin C supplements when pregnant.

A literary works review in the Cochrane Database of methodical Reviews looked right into the results of vitamin C supplementation throughout pregnancy.

The writer examined 29 studies that contained 24,300 pregnant women. There was insufficient proof for them to conclude that vitamin C helped prevent difficulties during pregnancy, such together stillbirth, preterm birth, or preeclampsia.

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However, pregnant ladies should shot to get enough vitamin C v their day-to-day diets when pregnant. Foodstuffs high in vitamin C include:

broccolikiwifruitorangesstrawberriestomatoes

If a woman has actually trouble meeting her everyday requirements, she need to talk to she doctor about supplementation.