The doctor pointed out the danger of vitamin C overdose.

General practitioner Elena Aleksentseva explained the dangers of shock doses of vitamin C. In an interview with aif.ru On Tuesday, September 8, she noted that ascorbic acid does not accumulate in the body: if 200 mg is absorbed almost completely, then when taking 1 g, more than half is excreted. A further increase in dosage practically does not increase the concentration of vitamin in the blood, but increases the load on the body.

According to the expert, regular intake of vitamin C does not reduce the risk of developing acute respiratory viral infections, and reduces the duration of the disease by less than a day.

Megadoses of vitamin C can cause nausea, cramps, bloating and diarrhea, and in people with gastritis or reflux, it can provoke an exacerbation. Excess ascorbic acid also increases the formation of oxalates, which increases the risk of kidney stones.

In addition, vitamin C enhances the absorption of iron, so high doses can be dangerous in diseases accompanied by its accumulation in the body. Frequent use of effervescent drugs can negatively affect tooth enamel.

Large doses of ascorbic acid can distort the results of some laboratory tests, including stool analysis for hidden blood, urine analysis, and glucose meter readings. Aleksentseva advised to inform the doctor about taking vitamin C in a dosage of more than 500-1000 mg.

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Internist Anna Kuznetsova told on September 1 Pravda.Ru Exceeding the threshold of 1,000 mg of vitamin C per day dramatically increases the risk of unpleasant consequences.: from intestinal malfunctions to the formation of kidney stones. She added that natural products are always preferable to pharmacy cans.

At the end of August, Natalia Markova, a dermatovenerologist, warned that vitamin patches, which are gaining popularity on social networks, have no proven effectiveness and can cause allergies or dermatitis. The skin is a powerful protective barrier, so vitamins cannot penetrate it without special enhancers and delivery systems, the Moscow City News Agency reports.

In early August, scientists at Perm Polytechnic University refuted popular myths about vitamin C. They noted that its excess does not enhance immunity, and citrus fruits are far from the main source of ascorbic acid. 360.ru . The leaders in vitamin C content are rosehip, red bell pepper, black currant and sea buckthorn.

In July, allergist Vladimir Bolibok, in an interview with RT, warned that sometimes, instead of being cheerful, the body responds to vitamins with an unexpected reaction - rash, itching or swelling. In particular, ascorbic acid can also cause reactions, especially in its effervescent form. Symptoms include rash, itching, runny nose, and digestive upset.

In April, gastroenterologist and internist Varvara Veretyuk told Izvestia that taking vitamin C in large doses is not always justified and may not bring the expected effect. According to her, the common practice of taking high doses of vitamin C at the first symptoms of a cold does not reduce the risk of illness and does not accelerate recovery in most people.