Vitamin C effervescent tablets are rich in vitamin C and are water soluble. To ensure their absorption and utilization and to reduce side effects, it is recommended to take them 1-2 hours after meals. Vitamin C tablets can improve the body’s immunity, promote wound healing, and have an auxiliary effect on the treatment of allergies. However, Vitamin C tablets are an acidic beverage and excessive consumption may lead to excessive secretion of stomach acid, causing acid reflux and heartburn, etc. To avoid digestive discomfort, drink them after 1 hour after eating. Long-term overdose may lead to uric acid or uric acid stones, and should be used with caution for patients suffering from gout, uric acid kidney stones, diabetes and other diseases. When applying Vitamin C effervescent tablets, care should also be taken not to use water that is too hot to brew, and warm water is most appropriate. It is not recommended to brew with tea or other beverages to avoid chemical reactions. In general, the body is not deficient in vitamin C and does not require large amounts of supplementation, and the daily application should not be excessive. Vitamin C effervescent tablets can supplement the body’s nutritional needs, but attention should be paid to the amount and time of administration to avoid bad effects.