Vitamin C is a beneficial and safe supplement for most people, but excessive consumption can lead to serious and unwanted side effects. Based on studies and reports, the website "Very Well Health" has highlighted 5 side effects of vitamin C overdose.
Kidney Stones High doses of vitamin C can increase oxalate levels in urine. Oxalates can bind with calcium and form kidney stones. This can be a significant concern for individuals prone to kidney stones or suffering from kidney diseases.
Digestive System Upset Excessive intake of vitamin C often causes digestive issues, including stomach cramps, nausea, diarrhea, and gas. When consumed in large amounts, vitamin C draws water from the intestines and irritates the digestive tract lining. Symptoms appear when exceeding a dose of 2000 mg per day.
Excessive Iron Absorption Vitamin C enhances the absorption of iron from plant-based foods, which can cause problems for people with hemochromatosis. An excess of vitamin C in this condition can worsen iron accumulation, increasing the risk of liver damage, heart disease, and diabetes.
False Lab Test Results An overdose of vitamin C can skew the results of certain laboratory tests, such as blood glucose meters, urinalysis, and tests based on oxidation-sensitive chemical reactions. These misleading results affect diagnosis or treatment.
Tooth Enamel Erosion Chewable vitamin C tablets, due to their high acidity, can over time lead to tooth enamel erosion, changing its color and increasing the risk of cavities.
