How much ascorbic acid can be consumed per day. How many calories are in ascorbic acid? What threatens an overdose of ascorbic acid - symptoms of an overdose

  • Date: 11.04.2019

In continuation of our conversation about collagen, I hasten to write what the norm of vitamin C for adults is, how much it to drink with amino acids, and why high dosages are no longer in fashion!

Why do we call vitamin C the most useful friend? Because he will never leave in trouble!

Vitamin C is involved in the synthesis of collagen, which is important for beautiful skin and its elasticity. He maintains alertness by activating adrenaline if danger suddenly arises. That is, it works as our guard, who will help to escape or join the battle!))

Other important functions of vitamin C:  detoxic and antioxidant, it cleanses the body of toxins and neutralizes free radicals. And it also helps to absorb iron.

Vitamin C is especially important for smokers., since it protects the body from oxidative stress and cells from destruction, removes the decay products of cigarette smoke.

Important! To reduce wrinkles and improve complexion, vitamin C is more effective when applied to the skin than when taken orally, as it acts faster and more effectively.

Vitamin C is also popular. to support immunity in the flu season  and ARI, the dosage for this is 250-1000 mg / day, but it is best to take it during the whole cold season!

Adult Vitamin C

  • 90 mg / day for adult men and 75 mg / day for adult women
  • an additional 35 mg / day is recommended for smokers
  • 85 mg / day for pregnant women and 120 mg / day for nursing

Now attention! These dosages are calculated with a healthy diet and more than enough for normal collagen synthesis!

Safe Vitamin C Rate: 500 mg

The maximum safe dosage (UL) is 2000 mg / day. But according to recent studies, daily intake of 1000 mg and higher has side effects:

  • women have an increased risk of cataracts
  • in men, the risk of kidney stones increases (crystals of calcium oxalate are formed)
  • reduces the effectiveness of statins, antidepressants and anticoagulants
  • high dosages of vitamin C affect blood counts (sugar and cholesterol)
  • impairs muscle performance during endurance training

Not very pleasant effects of high doses of vitamin C, agree. Moreover, these effects are not recorded when taking 500 mg / day.

My safe norm of vitamin C is 500 mg per day for this spring. And people with a tendency to form kidney stones are advised to limit up to 250 mg / day of vitamin C!

Vitamin Ester C for people with high acidity

This time I settled on the American Health brand. Citrus bioflavonoids in its complexes increase the absorption of vitamin C.

Esther C form  does not irritate the gastric mucosa at high dosages, which is especially important for people who have high acidity and a sensitive stomach. And as usual i will give a list of optionsthat I chose for myself:

Dosage 500 mg

  • American Health, Ester-C with Citrus Bioflavonoids, 500 mg, 120 Capsules  (for 4 months of admission)
  • American Health, Ester-C, Powder with Citrus Bioflavonoids (powder, convenient)
  • American Health, Ester-C with Cranberry & Immune Health Complex  (for immunity)
  • American Health, Ester-C, with Probiotics, Digestion & Immune Health Complex  (with probiotics)

Dosage 250 mg

Few people know about the benefits of nicotinic or succinic acids. But about vitamin C, or about “ascorbic acid,” even small children have heard.

Ascorbic acid is not accidentally very popular. To a large extent thanks to the active promotion of its antioxidant properties, the ability to strengthen the immune system and serve as the prevention of colds.

Approximately on such a list of useful properties, the ordinary consumer’s knowledge of ascorbic acid usually ends. And the fact that its improper use is fraught with unpleasant consequences, is even less aware of the inhabitants.

Let us dwell on the properties of vitamin C and try to figure out why the body needs it. How much exactly, in what doses and how to use ascorbic acid in order to get a minimum of harm from it and as much benefit as possible. Including - to protect yourself from the devastating effects of urbanization and poor ecology and to prevent premature aging.

The correct intake of ascorbic acid can significantly improve health and even serve as a prevention of cancer: cancer of the esophagus, bladder, intestines.

Lack of vitamin C, or ascorbic acid, provokes frequent colds, infectious diseases. May cause a state of depression, emotional imbalance. Poor and prolonged wound healing, rapid fatigue can also indicate a lack of ascorbic acid. In young children, its deficiency can provoke improper formation of skeleton bones. With severe deficiency, a serious illness such as scurvy can develop.

Our body does not know how to produce ascorbic acid on its own, so there are only two ways to satisfy its needs for this vitamin:

  1. Provide a daily dose of food.
  2. Use pharmacy preparations of ascorbic acid.

Daily doses of ascorbic acid

The usual daily dose due to the body's need for vitamin C is from 0.05 g to 100 mg. But it increases significantly with increased stress, hard physical labor, mental stress, emotional disturbances, with infectious diseases, pains, during pregnancy.

For the purpose of prevention for internal use:

The dose for adults is from 50 to 100 mg per day (1-2 tablets of 0.05 g).

With vitamin C deficiency in children, they are usually assigned 0.05-0.1 g (1-2 tablets) for a single dose. It is recommended to repeat it two or three times.

Maximum doses of ascorbic acid

For adults: a single dose - not more than 200 mg, daily - not more than 500 mg.

For children under 6 months, 30 mg per day. Not more than 35 mg per day - dose for babies aged 6 months to a year. From one year to three years of age, the dosage of vitamin rises to 40 mg. From 4 years to 10 years of age - 45 mg; and 50 mg for children 11 to 14 years old.

The use of ascorbic acid in pregnancy

In the II – III trimesters, a pregnant woman should receive at least about 60 mg of ascorbic acid per day.

During pregnancy and during lactation, a woman needs sufficiently large doses of ascorbic acid - up to 300 mg can be taken per day (6 tablets).

Overdose and its consequences

When taking excessively high doses of ascorbic acid for a long period - more than 1 g per day - side effects may occur:

  • Headache;
  • Nausea, vomiting, diarrhea, gastritis;
  • Malfunctions of the pancreas;
  • Kidney damage;
  • Decreased capillary permeability, increased blood coagulation;
  • Threatened abortion;
  • Allergic reactions;
  • Hypersensitivity of the central nervous system;
  • Violation of metabolic processes;
  • Other disorders

If any unpleasant symptoms appear, you should immediately stop taking ascorbic acid.

Taking too high doses during pregnancy can pose a threat to the baby’s health. And in a pregnant woman - provoke a miscarriage.

That dose of vitamin, which does not have time to be absorbed by the body, is excreted by the kidneys in its pure form. And this unnecessarily burdens them. One of the worst consequences is the formation of stones.

If any unpleasant symptoms appear, you should immediately stop taking ascorbic acid. It is necessary to control blood pressure and the state of the pancreas during treatment with ascorbic acid.

Ascorbic acid preparations are taken after meals.

Everyone needs vitamin C, especially pregnant and lactating, elderly people. Heavy smokers and alcohol abusers also have an increasing need for it due to irrational spending.

Vitamin C is vital for well-being. But its reserves are not reserved in the body. They must be replenished daily. As an alternative to pharmacy drugs, there is a wonderful natural remedy for the prevention of hypovitaminosis - an infusion of rose hips. A glass of vitamin drink per day - and your body is ready to repel unpleasant attacks!

G-lactone 2,3-dehydro-L-gulonic acid.

Description

Vitamin C is a water soluble vitamin. First allocated in 1923-1927. Zilva (S.S. Zilva) from lemon juice.

According to the results of numerous scientific studies, ascorbic acid is involved in the regulation of redox processes, carbohydrate metabolism, blood coagulation, tissue regeneration, in the synthesis of steroid hormones, collagen; increases the body's resistance, reduces vascular permeability, which is important for various capillary bleeding, infectious diseases, nasal, uterine and other bleeding. Helps maintain healthy skin, participates in immune responses, improves iron absorption. It has antioxidant properties.

It plays an important role in the functioning of the immune system, helping to increase the body's resistance to viral and bacterial infections.

With diseases accompanied by fever, as well as with increased physical and mental stress, the body's need for vitamin C increases.

Vitamin C is one of the factors protecting the body from the effects of stress. Enhances reparative processes. There are theoretical and experimental prerequisites for the use of vitamin C in order to reduce the risks of developing cancer.

Sources of ascorbic acid

A significant amount of ascorbic acid is found in products of plant origin (citrus fruits, leafy greens, melon, broccoli, Brussels sprouts, cauliflower and cabbage, blackcurrant, bell pepper, strawberries, tomatoes, apples, apricots, peaches, persimmons, sea buckthorn, rosehips, mountain ash, baked potato in a "uniform"). In products of animal origin - is represented slightly (liver, adrenal glands, kidneys).

Vitamin C-rich herbs: alfalfa, mullein, burdock root, gerbil, euphorbia, fennel seed, hay fenugreek, hops, horsetail, kelp, peppermint, nettle, oats, cayenne pepper, red pepper, parsley, pine needles, yarrow, plantain , raspberry leaf, red clover, scutellaria, violet leaves, sorrel.

Name of food The amount of ascorbic acid
Vegetables Fruits and berries Eggplant 5 Apricots 10 Canned green peas 10 Oranges 50 Fresh green peas 25 Watermelon 7 Zucchini 10 Bananas 10 White cabbage 40 Lingonberry 15 Sauerkraut 20 Grape 4 Cauliflower 75 Cherry 15 Potatoes stale 10 Garnet 5 Freshly picked potatoes 25 Pear 8 Green onion 27 Melon 20 Carrot 8 Wild strawberry 60 Cucumbers 15 Cranberry 15 Sweet green pepper 125 Gooseberry 40 Red pepper 250 Lemons 50 Radish 50 Raspberries 25 Radish 20 Tangerines 30 Turnip 20 Peaches 10 Salad 15 Plum 8 Tomato juice 15 Red currants 40 Tomato paste 25 Black currant 250 Red tomatoes 35 Blueberries 5 Horseradish 110-200 Dried Rosehip Up to 1500 Garlic Traces Apples, Antonovka 30 Spinach 30 Northern apples 20 Sorrel 60 Southern Apples 5-10 Milk products Koumiss 20 Milk Mare 25 Goat's milk 3 Cow's milk 2

Remember that only a few people and especially children eat enough fruits and vegetables, which are the main food sources of vitamin. Culinary processing and storage lead to the destruction of a significant part of vitamin C. Under stress, exposure to adverse environmental factors (smoking, industrial carcinogens, smog), vitamin C in tissues is consumed faster.

For the prevention of hypovitaminosis, rose hips are often used. Rose hips are characterized by a relatively high content of ascorbic acid (at least 0.2%) and are widely used as a source of vitamin C. The fruits of different types of rose hips collected during ripening are used. They contain, in addition to vitamin C, vitamins A, E sugars, organic acids, dietary fiber. Applied in the form of infusion, extracts, syrups.

An infusion of rose hips is prepared as follows: 10 g (1 tablespoon) of the fruit is placed in an enamel bowl, pour 200 ml (1 cup) of hot boiled water, cover with a lid and heated in a water bath (in boiling water) for 15 minutes, then cooled at at least 45 minutes at room temperature, filter. The remaining raw materials are squeezed and the volume of the resulting infusion is boiled water up to 200 ml. Take 1/2 cup 2 times a day after meals. Children are given 1/3 cup per reception. To improve the taste, you can add sugar or fruit syrup to the infusion.

Daily requirement for ascorbic acid

A person’s daily requirement for vitamin C depends on a number of reasons: age, gender, work performed, physiological state of the body (pregnancy, breast-feeding, the presence of a disease), climatic conditions, and the presence of bad habits.

Diseases, stress, fever and exposure to toxic substances (cigarette smoke, chemicals) increase the need for vitamin C.

In a hot climate and in the Far North, the need for vitamin C increases by 30-50 percent. The young body absorbs vitamin C better than the elderly, therefore, in elderly people, the need for vitamin C is slightly increased.

It is proved that contraceptives (oral contraceptives) lower the level of vitamin C in the blood and increase the daily need for it.

The weighted average physiological need for vitamin is 60-100 mg per day.

Table. The physiological requirements for vitamin C [MP 2.3.1.2432-08]

The body quickly consumes incoming vitamin C. It is advisable to constantly maintain a level of sufficient vitamin supply.

Signs of hypervitaminosis

Vitamin C is generally well tolerated in doses up to 1000 mg / day.

Excessive doses may cause diarrhea.

Large doses can cause hemolysis (destruction of red blood cells) in people suffering from the absence of a specific glucose-6-phosphate dehydrogenase enzyme. Therefore, people with such a violation can take high doses of vitamin C only under the strict supervision of a doctor.

When using large doses of ascorbic acid, a violation of the function of the pancreas with a violation of the synthesis of insulin is possible.

Vitamin C promotes the absorption of iron in the intestines.

Chewing candies and chewing gums with vitamin C can damage tooth enamel, so you should rinse your mouth or brush your teeth after taking them.

Do not take large doses to people with increased blood coagulation, thrombophlebitis and a tendency to thrombosis, as well as diabetes. With prolonged use of large doses of ascorbic acid, inhibition of the function of the insular apparatus of the pancreas is possible. During treatment, it is necessary to regularly monitor its functional ability. In connection with the stimulating effect of ascorbic acid on the formation of corticosteroid hormones during treatment with large doses, it is necessary to monitor renal function, blood pressure and the level of hormones in the blood.

The maximum permissible level of vitamin C intake for adults is 2000 mg / day (Methodological recommendations "Norms of physiological requirements for energy and nutrients for various groups of the population of the Russian Federation", MP 2.3.1.2432-08)

Symptoms of Hypovitaminosis

According to the head of the laboratory of vitamins and minerals of the Institute of Nutrition RAMS prof. V.B. Spiricheva, the results of surveys in different regions of Russia, show that the vast majority of children of preschool and school age lack the necessary vitamins for their normal growth and development.

The situation is especially unfavorable with vitamin C, a deficiency of which was revealed in 80-90% of the examined children.

When examining children in hospitals in Moscow, Yekaterinburg, Nizhny Novgorod and other cities, vitamin C deficiency is found in 60-70%.

The depth of this deficit grows in the winter-spring period, however, for many children, insufficient vitamin supply persists even in the more favorable summer and autumn months, that is, is year-round.

But insufficient intake of vitamins significantly reduces the activity of the immune system, increases the frequency and increases the severity of respiratory and gastrointestinal diseases. According to Russian researchers, the lack of ascorbic acid in schoolchildren halves the ability of leukocytes to destroy pathogens that enter the body, resulting in an increase in the frequency of acute respiratory diseases by 26-40%, and vice versa, taking vitamins significantly reduces the rate of acute respiratory infections.

The deficiency can be exogenous (due to the low content of ascorbic acid in foods) and endogenous (due to impaired absorption and assimilation of vitamin C in the human body).

With insufficient vitamin intake, hypovitaminosis can develop for a long time. Possible signs of vitamin C deficiency:

  • gum bleeding
  • cyanosis of lips, nose, ears, nails, gums
  • interdental papilla swelling
  • ease of bruising
  • poor wound healing
  • lethargy
  • hair loss
  • pallor and dry skin
  • irritability
  • joint pain
  • discomfort
  • hypothermia
  • general weakness

Preservation of Vitamin C during cooking

Name of dishes The safety of vitamin compared with the feedstock in%
Boiled cabbage with broth (cooking 1 hour) 50 Cabbage soup, standing on a hot plate at 70-75 ° 3 hours 20 The same for acidification 50 Cabbage soup, standing on a hot plate at 70-75 ° 6 hours 10 Sour cabbage soup (cooking 1 hour) 50 Stewed cabbage 15 Raw fried potatoes, chopped 35 Potatoes cooked for 25-30 minutes in a peel 75 Same, peeled 60 Peeled potatoes, lying 24 hours in water at room temperature 80 Mashed potatoes 20 Potato soup 50 The same, standing on a hot plate at 70-75 ° 3 hours 30 The same, standing for 6 hours traces Boiled carrots 40
  From the book of O.P. Molchanova "Fundamentals of a balanced diet", Medgiz, 1949.

a: 2: (s: 4: "TEXT"; s: 4122: "

When studying the effect of vitamin C on passive smokers, it was found that people in smoke-filled rooms experience oxidative stress, which accelerates the progression of atherosclerosis.

Conclusion: passive smokers need a subsidy of vitamin C.

* Supplements. DOES NOT A MEDICINE

  • Familiar to many of us from childhood, vitamin C, or ascorbic acid, is a substance that is actively involved in almost all biochemical processes of the human body. It must be consumed daily with food or in a synthetic form for prevention and during illness for a speedy recovery. Vitamin C is found in many fruits, berries, including rose hips, pomegranates, and currants. In the form of dragees, powders, in ampoules and tablets, vitamin is sold in pharmacies.

    Why is ascorbic acid needed?

    For the first time in its pure form, ascorbic acid was discovered by the chemist Zilva at the beginning of the last century, who synthesized it from lemon juice. According to its main characteristics, it represents a crystalline substance of white color, acidic in taste and rapidly decaying in water.

    Organic compound (C 6 H 8 O 6), or vitamin C, is found in many plants in varying amounts. With its help, a lot of oxidation and reduction processes occur, and with a lack of vitamin in the human body, development of hypovitaminosis is possible, leading to other disorders. It is needed to produce lymphocytes that destroy infected cells and maintain the function of white blood cells (white blood cells). The ability of the body to cope with infections depends on their readiness.

    Vitamin C must be ingested continuously in the human body.

    The consumption of ascorbic acid is especially relevant in the following cases:

    • poisoning by chemicals when inhaled;
    • development of hypovitaminosis;
    • to a growing body, since the absence of a useful substance can lead to pathology of the structure of the skeleton;
    • during pregnancy;
    • with active smoking, as tobacco removes it from the body.

    Beneficial features

    When using vitamin complexes, many people do not fully understand the usefulness of ascorbic acid, and often neglect it, preferring more expensive drugs.

    The beneficial properties of ascorbic acid include the following:

    • It helps to increase the stamina of the body.
    • It has a protective function in colds, participating in collagen biosynthesis and in the production of lymphocytes that destroy infected cells.
    • Vitamin C contributes to the regulation of carbohydrate metabolism and blood coagulation.
    • Acceleration of the healing process of wounds and bone fusion.
    • The participation of vitamin C in the synthesis of collagen protein promotes the growth of muscle cells, bones, and cartilage.
    • How an antioxidant removes toxins from the body by regulating redox processes. Including promotes the removal of heavy metals (copper, lead) from the body.
    • Recovery of exocrine pancreatic and thyroid function.
    • Regulation of blood formation processes, normalization of capillary permeability.
    • Decrease in body intoxication with frequent use of alcohol and smoking.
    • It serves as a general strengthening agent for various diseases.
    • It has a positive effect on mental performance, mental state, helps to cope with stress.
    • Promotes activation of enzymes in the liver, increasing the ability to cleanse the body.
    • Normalizes cholesterol.
    • Helps maintain skin firmness and elasticity, protecting it from premature aging.
    • Participates in the synthesis.

    Vitamin C is included in the complex therapy in the treatment of many diseases. It is very important to give to children in tablets, since a lack of vitamin C in a growing body can affect skeletal structure changes.

    Cautions and indications for use

    How much and how to take ascorbic acid? The daily norm is 100 mg. Take a synthetic form of the vitamin after a meal.

    Vitamin C itself is not dangerous, but if it is abused, an allergic reaction is possible - the appearance of itching, a small rash and other phenomena. If there are problems with the gastrointestinal tract, then vitamin C, or ascorbic acid, consumed in large quantities, can lead to a number of complications. An overdose of ascorbic acid can cause abdominal pain, diarrhea, and upset stomach.

    Contraindications to taking ascorbic acid are diabetes and thrombophlebitis: it has an identical composition with glucose, and this can trigger an increase in blood sugar. Caution should be taken in its use for those who have kidney failure, anemia, leukemia, and progressive malignancies. Given that ascorbic acid has contraindications, the intake and daily dose should be determined by a doctor.

    Speaking about the benefits of using vitamin C, we must not forget that its excess in the body can lead to the appearance of:

    • diarrhea
    • nausea
    • vomiting
    • heartburn;
    • bloating and cramping;
    • headache;
    • insomnia;
    • the formation of kidney stones.

    In large doses, ascorbic acid will not work to the benefit, but to the detriment. Uncontrolled use can contribute to the appearance and accelerate the development of atherosclerosis, in children - to injure the renal tubules, causing the development of kidney stone disease. Therefore, you need to know what daily rate is suitable for each person. The dosage of the norm varies for adults and children, which is why we need specialist advice.

    Dosage

    According to experts, vitamin C can be consumed per day at least 90 mg for men and 75 mg for women. A more accurate dosage of the substance per day to people engaged in physically hard work, professional sports, during pregnancy or breastfeeding is determined by the doctor, taking into account the characteristics of the body.

    The daily doses for younger patients are as follows: adolescents take 65-75 mg, children - about 35-50 mg. It will be convenient to apply with a content of 25 mg of vitamin in 1 pc. The recommended maximum daily dose is 2000 mg, but some modern scientists advise increasing the daily dosage to 3000 mg in order to prevent cancer

    This useful vitamin is, and therefore does not accumulate in the body and is excreted in the urine. Therefore drink it, eat it   or take as tablets is recommended daily. is heuseful in recommended by doctorsdosage   people of any age, with the exception of certain conditions. If an adult or childate   fruits and vegetables rich in ascorbicacid   regularly in a healthy state, then at the first symptoms of respiratory diseases it is necessary to increase their number and supplement with the consumption of synthetic forms of vitamin C.

    How much per day can I use Ascorbic Acid dragee 50mg "Yellow Vitamins"

    1. 2 times a day, preferably in the morning and evening
    2. Depends on what you are going to use vitamin C.
      1. If for the purpose of treatment at the onset of the disease, then 1.25 g (half a bag of 2.5 g) 1-3 times a day, dissolving in 40 degree water and a tablespoon of honey. This is 25-75 yellow pieces per day. An overdose of vitamin C in a healthy body does not happen (in the worst case, diarrhea). It helps me perfectly without any side effects. Constantly drinking of course in such doses is pointless, and it can be harmful.

      2. If for prevention purposes, then the exact dosage can be obtained by screening the blood for vitamins and micro / macro elements. The doctor will prescribe the necessary dose of understated elements and vitamins. Then repeated screening is carried out and dosage is adjusted. According to the mind, this is done, and not "drink 2-3 a day as it says on the package." Vitamin C is drunk with sweets after eating, so it is better absorbed.

      PS: for those who think that vitamin C, for example, in onions and in powder is somewhat different, then I will disappoint you - there is no difference in them (including the degree of digestibility). These are typical misconceptions.

    3. If you want to get oxalate kidney stones, gastritis and something else like this, then you can maximize it, but if you don’t have such a desire, then it’s better to eat oranges, drink rosehip infusion, etc. Perhaps this is better for health.
    4. Not more than 10 per day
    5. In principle - as much as you like. Only the meaning of more than 2 pieces is not enough. In general, the combination drug Ascorutin is better.
    6. Personally, I eat them three at a time! You can immediately or for a bite! I eat, one in the morning, the second, in the evening, and the third, before snow
    7. In a package of 200 tablets? ?
      They have a small dosage!
      Within 3-4 days, 20 per day.
    8. all this is a bitch, you can immediately pack
    9. Better than 5 apples a day, 5 glasses of water a day, 5 tangerines a day - tangerines can be replaced with any other fruits in an amount of at least 200g. Replace sugar with honey (choose not from the supermarket, look for a supplier), eat poppy seeds, sesame seeds, walnuts, buckwheat, cottage cheese. And no chemistry is needed, no modern pharmaceutical conglomerate is needed). They won’t bring any more benefits.
    10. For prophylaxis for an adult, 1-2 tablets 3 times a day. For therapeutic purposes, up to 1 gram per day (20 pieces).
    11. Ascorbic acid is prescribed orally after a meal. Dosage for adults for 1-2 tablets when taken 3 to 5 times a day; for children older than 3 years, 1-2 tablets when taking 2 to 3 times a day.
        In order to prevent ascorbic acid, adults are prescribed in a daily dose of 2 tablets.
        For children from 3 to 14 years of age, for the prevention of hypovitaminosis, 1 tablet is prescribed 1 time per day.
    12. 1-2 pcs per day
    13. The daily requirement for an adult is about 70-100 mg, for young men 14-17 years old 80 mg.
    14. Vitamins need to be found in products, and these are in transit excreted from the body, no sense.