Quick Answer

You cannot cure an existing hepatitis B infection with a short course of medicine, but you can stop the virus from spreading and stop it from damaging the liver. Vaccination, safer sex, never sharing needles or razors, and antiviral treatment such as tenofovir during pregnancy or chronic infection are the main tools. Hepatitis A and C need different strategies.

  • Hepatitis B spreads through blood, semen, and vaginal fluids, not food or water.
  • The hepatitis B vaccine is the most effective way to stop new infections.
  • Newborns should receive their first vaccine dose within 24 hours of birth, per CDC.
  • Hepatitis A spreads fecal-orally, while hepatitis C spreads mainly through blood.
  • Chronic hepatitis B is suppressed, not cured, with antivirals such as tenofovir or entecavir.
  • Treatment during pregnancy plus infant vaccination sharply reduces transmission to a newborn.

Context Most Pages Skip

When people ask how to stop hepatitis B, they usually mean one of three things: stop the virus passing to someone else, stop it from scarring the liver, or stop the infection altogether. The third is the hard one. Hepatitis B is a DNA virus that leaves a persistent form inside liver cells, so antiviral drugs suppress it rather than erase it. Much of the liver damage is caused not by the virus directly but by the immune system attacking infected cells - which is one reason hepatitis B behaves so differently from hepatitis A or C.

Related Questions

⚕️ This page is educational and does not replace advice from a licensed clinician. If you may have been exposed to an STI, get tested — most infections are manageable, and many are fully curable.

Sources & Further Reading

Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.