
What happens if you eat too many vitamin C tablets? Side effects from too much vitamin C are very rare. This is because the body cannot store the vitamin. Studies have shown, however, that vitamin C amounts greater than 2,000 mg/day can lead to nausea and diarrhea.
What are the side effects of excessive vitamin C?
Side Effects Of Eating Too Much Vitamin C
- Digestive Problems. Too much vitamin C can cause digestive symptoms, and digestive problems are the commonest side effect.
- Iron Overload. Vitamin C enhances iron absorption. ...
- Kidney Stones. The excessive vitamin C supplementation intake leads to oxalate and uric acid excretion via urine. ...
- Bone Spurs. ...
What are the symptoms of excessive vitamin C?
Some symptoms of vitamin C overdose can include:
- Digestive issues like diarrhea, nausea or abdominal cramps
- Heartburn
- Headaches
- Insomnia
- Accumulation of iron, which can damage tissue
What happens when you overdose on vitamin C?
Vitamin C normally helps the absorption of iron in the gastrointestinal system. In cases of vitamin C overdose, more iron will be absorbed, often leading to iron toxicity. In such cases, problems with normal liver function or various heart diseases can develop.
Why is too much vitamin C bad for You?
What to Know About Vitamin C and Kidney Health
- The kidneys filter excess vitamin C from the body.
- Getting high doses of vitamin C from supplements could increase your risk of kidney stones.
- Some research shows that higher vitamin C intake may lower your risk for kidney cancer, but further study is needed.

How much vitamin C is an overdose?
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 ( 20 ).
Can taking too much vitamin C hurt you?
The Side Effects of Too Much Vitamin C Common side effects include nausea, vomiting, heartburn, and esophagitis. You may also notice stomach cramps, diarrhea or intestinal obstruction. However, you can also experience symptoms such as fatigue, headaches, feeling sleepy or insomnia. Flushed skin is also a symptom.
Do you pee out vitamin C?
Vitamin C is water-soluble, so it's not stored within your body. If you consume more than your body needs, it's excreted in your urine.
Does vitamin C make you gain weight?
Weight Gain Early research has found a link between low levels of vitamin C and higher amounts of body fat, especially belly fat.
How much vitamin C should I take a day?
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 (mg) a day, and the upper limit is 2,000 mg a day.
Why is vitamin C important?
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.
Can too much vitamin C cause nausea?
Although too much dietary vitamin C is unlikely to be harmful, megadoses of vitamin C supplements might cause: Diarrhea. Nausea. Vomiting. Heartburn. Abdominal cramps. Headache. Insomnia. Remember, for most people, a healthy diet provides an adequate amount of vitamin C.
What happens if you take too much vitamin C?
Common mild side effects of too much vitamin C include: diarrhea. nausea.
How much vitamin C does the body absorb?
The body does not absorb all of the vitamin C that it gets from supplements. of this vitamin. If a person takes more than 1 gram (g) of vitamin C per day, the body absorbs less than 50% of the vitamin, which reduces the risk of negative side effects. The excess leaves the body in the urine.
How much vitamin C should I take during pregnancy?
During pregnancy or when breastfeeding, women should get the following levels of vitamin C per day: 1 14–18 years: 80 mg during pregnancy and 115 mg when breastfeeding 2 19 years and older: 85 mg during pregnancy and 120 mg when breastfeeding
How much vitamin C should I take a day?
In adults, the recommended dietary allowance (RDA) Trusted Source. of vitamin C is 90 milligrams (mg) for males and 75 mg for females. Adults who take more than 2,000 mg of vitamin C per day may experience side effects.
Can too much vitamin C cause kidney stones?
Kidney stones are a possible consequence of too much vitamin C supplementation. Doctors believe that too much vitamin C supplementation could result in a person excreting the compounds oxalate and uric acid in their urine. These compounds could lead to kidney stone formation.
Can pregnant women take vitamin C?
The authors examined 29 studies that included 24,300 pregnant women.
Is it safe to take vitamin C while pregnant?
Vitamin C and pregnancy. Summary. Vitamin C is usually safe to take even at high dosages. However, people may sometimes experience mild side effects, such as digestive discomfort. Rarely, more serious side effects can occur. Vitamin C is an essential vitamin for the human body.
What is the recommended dose of vitamin C?
According to the National Institutes of Health, the recommended daily intake (RDI) of vitamin C with regard to sex and physical condition of a person is described below.
What are the symptoms of vitamin C deficiency?
Whenever there is a vitamin C deficiency, health professionals recommend supplements to rectify the deficiency and allow normal functioning of the body.
What is vitamin C and what is its role in your body?
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that naturally occurs in foods.
What happens if you have low levels of vitamin C in your body?
Low levels of vitamin C in the body (vitamin C deficiency) are rare in the United States. However, you should remember to consume foods that contain vitamin C daily because the vitamin does not get stored in the body and is excreted daily through urine.
What happens if you take too much vitamin C?
Too much vitamin C or zinc could cause nausea, diarrhea, and stomach cramps. Too much selenium could lead to hair loss, gastrointestinal upset, fatigue, and mild nerve damage.
Can you take too much multivitamin?
That way, your doctor can help you keep doses in a safe range. "If you're taking a basic multivitamin, there's no need to fear taking too much," says Andrew Shao, PhD, senior vice president of scientific and regulatory affairs for the Council for Responsible Nutrition, a trade group for the supplements industry.
Is it hard to overdo unfortified food?
Chances are, the unfortified foods you eat aren't a problem. "It's pretty hard to overdo it from food alone," says Johanna Dwyer, RD, a senior research scientist with the National Institutes of Health's Office of Dietary Supplements.
Does orange juice have vitamins?
Nowadays, everything from bottled water to orange juice seems to have soup ed-up levels of vitamins and minerals in it. That may sound like a way to help cover your nutritional bases, especially if your diet is less than stellar. But routinely getting an overload of vitamins and minerals can hurt you. Too much vitamin C or zinc could cause nausea, ...
Is a pill a substitute for a good diet?
It’s also important to focus on getting your nutrients from food first, says Dr. Jenkins, and not from supplements. “Pills are not a substitute for a good diet—plant-based, fruit, veggies, whole grains, nuts, and seeds,” he says. “They are packed with what you need.”.
Is it safe to take multiple supplements?
But just because supplements are safe in moderation doesn’t mean that more is better . Combining multiple supplements or taking higher-than-recommended doses can increase the risk that they can actually cause harm, says Kitchin. Plus, because the industry is not well regulated, there's no real guarantee that the ingredients and dosage on the label are accurate.
Can vitamin C cause diarrhea?
Taking high doses of vitamin C can lead to stomach cramping and diarrhea, for example. High doses of vitamin A, vitamin D, and other nutrients can lead to more serious, long-term complications—like liver and kidney problems, or a dangerous hardening of blood vessels.
Do vitamin supplements cause death?
Dr. Jenkins agrees that, when taken in moderation, most vitamin and mineral supplements won’t cause harm . He also stresses that his recent study only looked at cardiovascular problems and early death, and that supplements may still have benefits in other areas.
Can supplements be taken in real life?
In real life, however, that rarely happens. That’s where supplements come in—theoretically, at least. For decades, we were taught that vitamins and minerals in pill form could help make up for deficiencies in the typical American diet, or provide health and energy boosts that food alone couldn’t. In recent years, however, many scientists have ...
Does taking supplements reduce cancer risk?
For example, a major 2015 study found that taking dietary supplements does not appear to reduce the risk of cancer. Several studies, including one published last month in the Journal of the American College of Cardiology, have also found that regular supplement use has no net effect on heart health or risk of early death.
Does Kitchin recommend calcium?
That being said, Kitchin does believe that a multivitamin can help make up for some deficiencies in a person’s diet, especially if they avoid certain food groups like meat or dairy. She also recommends calcium and vitamin D supplements to some of her patients who are at risk of osteoporosis, “but I always look at their diet first before prescribing them,” she says.
What are the side effects of taking vitamin C?
Although vitamin C has relatively low toxicity, high doses of it can cause gastrointestinal disturbances, including diarrhea, cramps, nausea, and vomiting.
How many fat soluble vitamins are there?
There are four fat-soluble vitamins: Given that fat-soluble vitamins can accumulate in the body, these nutrients are more likely to lead to toxicity than water-soluble vitamins. ). ). ). Water-soluble vitamins are readily excreted from the body, while fat-soluble vitamins can be stored in tissues.
Which fat soluble vitamins have UL?
Aside from vitamin K, which has a low potential for toxicity, the remaining three fat-soluble vitamins have a set UL due to their potential to cause harm at high doses. Here are some side effects related to the overconsumption of fat-soluble vitamins: Vitamin A.
Can water soluble vitamins cause toxicity?
When taken in excess, some water-soluble vitamins can cause adverse effects, some of which can be dangerous. However, similarly to vitamin K, certain water-soluble vitamins have no observable toxicity and hence no set UL.
Can taking too many vitamins cause death?
Keep in mind that these potentially deadly side effects are associated with taking exceptionally high doses of vitamins. Even so, caution should always be taken when consuming any dietary supplement. sUMMARY. In rare cases, taking extremely high doses of certain vitamins may lead to fatal complications.
Is it bad to take too much vitamin A?
While rare, taking too much vitamin A, D, or E can lead to potentially harmful side effects ( 5. Trusted Source. ). Alternatively, taking high doses of non-synthetic vitamin K seems to be relatively harmless, which is why an upper intake level (UL) has not been set for this nutrient ( 6.
Can you take too much vitamin supplements?
Although vitamin supplements are safely consumed by many people on a daily basis, it’s possible to take too high of a dose, which can result in adverse side effects. Overdosing on certain vitamins can lead to serious complications and, in rare circumstances, even death.
