The toxic side effects of Lipoic Acid Injection include allergic reaction, hypoglycemia and head swelling. 1. Allergic reaction: some patients may have allergic reaction, which can be manifested as urticaria, eczema, and in severe cases, even anaphylactic shock and endanger patients’ lives. 2. Hypoglycemia: Lipoic acid injection is often used in diabetic peripheral neuropathy, its role is to organize the glycosylation of proteins, reducing the body’s use of glucose, when used in excess can lead to hypoglycemic reaction, patients may show general weakness, shivering, sweating and other symptoms. 3. Head swelling: If the intravenous drip is too fast, it will cause head swelling and other symptoms, accompanied by slight dyspnea, should immediately slow down the drip rate, generally can be relieved by themselves. Patients who are allergic to this product, pregnant women, lactating women, children, etc. are prohibited from using it. If the above symptoms occur during the use of the product, it is recommended to immediately consult a doctor for symptomatic treatment, do not use it arbitrarily.