Vitamin B4 is chemically known as Adenine Phosphate Tablets and no significant side effects have been seen with Adenine Phosphate Tablets at the recommended dosage. The main effect of vitamin B4 on the human body is to promote the proliferation of white blood cells in the body, which is more effective for various causes of leukopenia. It should be used with caution by pregnant and breastfeeding women only after weighing the pros and cons with a medical professional. Vitamin B4 has not shown any significant adverse effects at the recommended doses, but care should be taken not to overdose to avoid medication risks. Patients taking vitamin B4 are advised to do so under the supervision of a doctor. If patients have adverse reactions, they need to go to the regular hospital for examination in time.