Vitamin B complex tablets have the ability to prevent as well as treat malnutrition, anorexia, beriberi, pellagra, etc. caused by B vitamin deficiency. The main ingredients of Vitamin B Complex Tablets are Vitamin B₁, Vitamin B₂, Vitamin B₆, Niacinamide, and Calcium Pantothenate. The efficacy and function of Vitamin B Complex Tablets is to prevent and treat malnutrition, anorexia, beriberi, and pellagra caused by B vitamin deficiency. Some patients may experience adverse reactions such as irritability, fatigue, loss of appetite, and yellowish urine after taking Vitamin B Complex Tablets. Patients who are allergic to the ingredients of Vitamin B Complex Tablets are prohibited from using the drug to prevent allergic symptoms such as generalized red rash and vomiting. Complex vitamin B tablets should be used in accordance with the doctor’s instructions to avoid blind use of medication. If irritability, fatigue and other symptoms occur after the use of vitamin B complex tablets, the drug should be stopped immediately and seek medical attention.