Vitamin B6, or Vitamin B₆, includes Vitamin B₆ tablets, Vitamin B₆ ointment, and Vitamin B₆ injections, and the effects of different types of Vitamin B₆ vary. 1. Vitamin B₆ tablets: can be used for the treatment and prevention of diseases caused by vitamin B₆ deficiency, such as dry and cracked lips, seborrheic dermatitis, etc., and also has a very good effect on relieving vomiting during pregnancy. 2. Vitamin B₆ ointment: clinically used in the treatment of acne, seborrheic eczema, rosacea, wrinkled skin syndrome and other skin diseases. 3. Vitamin B₆ injection: can prevent and treat isoniazid poisoning, for pregnancy, radiation sickness, anticancer drug-induced vomiting also has a good effect on relief. It has a certain auxiliary therapeutic effect on seborrheic dermatitis, fever, burns, congestive heart failure, intestinal disorders, malabsorption syndrome with liver and biliary system disorders and other symptoms. When vitamin B₆ is used for oral or intravenous administration, adverse reactions such as nausea, vomiting, abdominal pain, loss of appetite, and in severe cases, dyspnea and numbness of the extremities may occur. If the reaction to the medication is more intense, severe vomiting, numbness of the limbs or even dyspnea occurs, medical attention should be sought promptly. When using vitamin B₆ ointment topically, some patients may experience burning sensation, redness and swelling at the site of application, in which case the drug should be stopped immediately and the drug should be washed off. Patients who are allergic to vitamin B₆ should be prohibited from using all vitamin B₆ drugs, and the drug needs to be used under the guidance of a professional doctor on medical advice, and should not be blindly self-medication.