The main hazards of sodium D-isoascorbate include the occurrence of allergic reactions, increased risk of kidney stones, and chronic toxicity with prolonged use. 1. Allergic reaction: Sodium D-isoascorbate is a kind of preservative, which has the function of preventing the growth of microorganisms and keeping food fresh. If you are allergic to sodium d-isoascorbate, you may have allergic reactions such as itchy skin, rash, headache and dizziness, and flushing of the body after eating food containing sodium D-isoascorbate. 2. Increase the risk of kidney stones: people who often eat food containing sodium D-isoascorbate, due to sodium D-isoascorbate will lead to the accumulation of human body acid, when the concentration of acid reaches a certain level, it may precipitate crystals in the kidneys, resulting in patients with kidney stones. It may also cause gout. 3. Chronic poisoning: As sodium D-isoascorbate may lead to lysis of red blood cells, if the red blood cells are lysed before normal apoptosis, the number of red blood cells in the patient’s blood may be reduced causing hemolytic anemia. Patients with the above symptoms should go to the hospital for relevant examinations in time, and after clarifying the cause of the disease, choose the treatment plan for treatment under the guidance of the doctor.