Nitazan, or Thymopentin for Injection or Thymofaxin for Injection, is strictly used clinically for the adjuvant treatment of chronic hepatitis B and some cancers.Thymopentin has some effects, but they are very limited and have a narrow scope of application, and even less suitable for daily injections for the general population. The drug also has certain side effects, and it is not recommended that normal people in good health take the risk of side effects for certain uncertain effects. Some people use Nitazan to improve their immunity, and repeated active stimulation of the immune system to make it stronger may not be a good thing, even if there is evidence of immune deficiency, it should be carried out under the guidance of a physician and through regular medical means.