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It is OK to take vitamin C every day in recommended dosages. Too much vitamin C, however, can cause side effects
It is OK to take vitamin C every day in recommended dosages. Since your body can’t produce or store vitamin C on its own, you need to get it through food or supplements.
Too much vitamin C, however, can cause side effects. Learn about the upper limits of vitamin C intake, how much you should have each day, and good sources to include in your diet.
What is vitamin C?
Vitamin C, also called ascorbic acid, is an important micronutrient that belongs to the water-soluble group of vitamins that includes folate and other B vitamins.
Vitamin C is a powerful antioxidant, which means that it protects cells and tissues from free radical damage. It also helps synthesize important substances, such as collagen protein, in the body.
What are the upper limits of vitamin C intake?
Daily upper limits for vitamin C include that which is obtained from all sources—food, beverages, and supplements. Experts recommend that most of your vitamin C needs should be met through your diet.
0 to 12 months
Not known
1 to 3 years
400
4 to 8 years
650
9 to 13 years
1200
14 to 18 years
1800
19 years and older
2000
Your upper limit of vitamin C may vary depending whether you have any underlying conditions. For example, if you have chronic kidney disease, chronic liver disease, a history of kidney stones, or gout, you must not take more than 1000 mg of vitamin C per day.
If you are pregnant, you should also avoid Vitamin C supplementation in large doses because it can cause vitamin C deficiency in the baby after delivery.
How much vitamin C should you have each day?
Your daily vitamin needs vary depending on your age, gender, and overall health. For example, exposure to secondhand smoke may increase your vitamin C requirements.
0 to 6 months
Males
40
Females
40
7 to 12 months
Males
50
Females
50
1 to 3 years
Males
15
Females
15
4 to 8 years
Males
25
Females
25
9 to 13 years
Males
45
Females
45
14 to 18 years
Males
75
80
115
Females
65
19 years and above
Males
90
85
120
Females
75
Smokers and those exposed to secondhand smoke
Males
Recommended daily amount+35 mg
Females
Recommended daily amount+35 mg
Vitamin C supplements should be used with caution if you are taking certain medications such as lipid-lowering drugs (niacin and statins) or certain medications used for Alzheimer’s disease. Vitamin C can also interfere with cancer treatment (chemotherapy and radiation therapy).
What are the side effects of taking too much vitamin C?
Excessive vitamin C intake can lead to the following side effects:
If you have hemochromatosis, excessive vitamin C intake can worsen the condition and lead to organ damage.
What foods are high in vitamin C?
Vitamin C is present in various fruits and vegetables, including:
- Citrus fruits
- Peppers
- Kiwi
- Watermelon
- Grapefruit
- Papaya
- Tomatoes
- Pineapple
- Berries
- Leafy greens
- Brussel sprouts
- Potatoes
What does vitamin C do for your body?
Vitamin C plays an important role in various functions of the body:
- Maintains healthy bones, cartilage, teeth, and gums
- Promotes immune system health
- Protects cells and tissues from the damaging effects of free radicals
- Helps wound healing
- Helps absorb iron from the gut
- Helps produce neurotransmitters in the brain and nerves
- Helps the adrenal glands produce crucial hormones
- Keeps the skin healthy
- Helps generate energy in the body by contributing to the formation of carnitine (a compound that helps release energy from fats)
- Maintains heart and blood vessel health
- Promotes brain health
- Helps maintain eye health
What are signs of vitamin C deficiency?
Signs that you may not be getting enough vitamin C include the following:
- Bleeding or swollen gums
- Fatigue
- Weakness
- Pale appearance
- Hair loss
- Delayed wound healing
- Easy bruising
- Loosening or falling teeth
- Frequent infections
Scurvy is a disease caused by vitamin C deficiency. Symptoms such as gum bleeding, loss of teeth, and increased skin bruising are caused by a decreased synthesis of collagen, which is the result of a lack of Vitamin C.
Conditions that may increase the risk of vitamin C deficiency include:
- Diet low in fruits and vegetables
- Alcohol consumption
- Active or secondhand or passive smoking
- Drug abuse