Side Effects of Vitamin C That’ll Shock You

7 must-read side effects of Vitamin C that you should consider

Our body consists of interconnected complex mechanisms that require a lot of minerals and vitamins to work at their optimum level. One of those vitamins is Vitamin C. So, as other Vitamins.we do have Side Effects of Vitamin C that we’re Going to Study today. It is one of the most essential vitamins that are required for the proper functioning of the human body. Let’s have a look at what is Vitamin C and what is it used for…

Vitamin C

Vitamin C is also sometimes called Ascorbic acid. Another name for Vitamin C is Ascorbate. General formula of Vitamin C is C6H8O6. Vitamin C can be found in different types of foods. Common sources of Vitamin C are Orange, Red pepper, Green pepper, Kiwi, broccoli. Tomatoes etc.

You can also find it in medical stores in the form of dietary supplements which can be used on the recommendation of a medical professional. Vitamin C can be administered through the mouth, intravenous, intramuscular, and subcutaneous shots.

Vitamin C is a water-soluble vitamin and it is not stored by the body. Our body uses the amount of Vitamin C required by the body and eliminates extra Vitamin C out of the body. Also, it cannot be produced by our body, so we have to consume it in some other form like Vitamin C rich foods or dietary supplements.

side effects of Vitamin C


Vitamin C is an essential vitamin and is needed by the body to function properly. It acts as a reducing agent or antioxidant for various metabolic processes. It helps our immune system. It is also beneficial for the skin. It is also used to treat scurvy. Vitamin C is also used to prevent and treat issues like the common cold. There are also unproven conditions where Vitamin C is used like dementia, cancer, autism, and cardiovascular disorders.


There is s recommended level of different vitamins that will help fulfill your body’s needs. This recommended level of vitamins is often called RDA, also known as recommended dietary allowance. This is an ideal amount of Vitamins that you should consume daily.

The dosage of Vitamin C depends on your health condition, age, and other factors. But usual RDA for a male adult is around 90 mg per day and for a female adult is 75 mg per day. RDA for children is different from those of adults and depends on their age.

7 Common Side Effects of Vitamin C

As we have seen the recommended dosage level and of course, everything is good in limits. But sometimes people overdose on these vitamins and extra of everything is usually bad. Also, dosage depends on your age and other medical factors, so the optimum level of Vitamin C is different for different people. So not knowing the adequate level of Vitamin C can make a person to under consume or over-consume Vitamin C. Let’s see 7 common side effects of Vitamin C that a person may face: –

1. Diarrhea

One of the most common side effects of Vitamin C is diarrhea. Overdosage of Vitamin C can cause severe diarrhea. Usually, Vitamin C travels throughout the gastrointestinal tract and gets absorbed in the upper portion of the intestine. Excess Vitamin C is excreted from our bodies. As vitamin C is water-soluble, so its excretion needs a lot of water. This can induce diarrhea and a person can become dehydrated pretty quickly. So, one should not exceed the consumption of Vitamin C.

side effects of Vitamin C

2. Stomach Cramps and Nausea

Vitamin C in general can upset the gastrointestinal tract and cause stomach cramps and Nausea. This can cause a pretty bad feeling but if you already suffer from stomach or gastrointestinal disorders, Vitamin C is not going to be your cup of tea. You should consult your doctor before starting Vitamin C consumption.

3. Blood issues

Some people suffer from a metabolic deficiency called G6DP deficiency. In these people, excess Vitamin C can cause the blood cells to break down, causing major issues to people. So people with G6DP deficiency should avoid Vitamin C and even if they plan to use Vitamin C, consultation with a doctor before consumption is a must.

side effects of Vitamin C

4. Kidney stones

As some of the previous points prove that excess Vitamin C is not that good for kidneys. It can cause kidney stones and a person has to suffer immense pain. Prolonged exposure of kidney to kidney stones can also cause permanent kidney damage. So, you should keep an eye on the dosage level of Vitamin C to avoid major issues.

side effects of Vitamin C

5. Iron overload

Vitamin C tends to increase iron absorption in the body. It can bind to non-heme iron, making it easy for the body to absorb non-heme iron. This is going to be a good thing for the body if Vitamin C is consumed inappropriate amount. But if Vitamin C is over consumed, it also means that more non-heme iron will be absorbed in the body which can cause iron overload in the human body. So make sure to check the amount of Vitamin C you consume.

6. Joints pain

An adequate amount of Vitamin C is a good thing. But leaning towards overdosage is a thing that is not going to be a good thing. Overdosage of Vitamin C can cause bone spur. It also causes Joints pain. This indicates that the overdosage of Vitamin C is not good for bones. So not crossing the recommended level of Vitamin C is what you need to do.

side effects of Vitamin C

7. Weakness

In addition to the above-mentioned issues, the Over-dosage of Vitamin C is going to cause fatigue and weakness. It can make you lazy and tired and make it difficult for you to do daily tasks. Overdosage is going to induce extreme weakness in your body. So make sure to stay away from the overdosage of Vitamin C.

side effects of Vitamin C

Along with all aforementioned issues, Vitamin C can also cause heartburn, headache, skin flushing, and nutrient imbalance. It can also counter-interact with other drugs like warfarin, niacin, indinavir, etc. It can decrease the effect of these drugs.


So, consultation with a good doctor before consumption of Vitamin C is what you need. Talk with your doctor, tell about your current medications and ask the optimum amount of Vitamin C for you. Also, make sure to not exceed the recommended level of Vitamin C advised by your doctor.

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