HIV Post-exposure prophylaxis (PEP)

HIV Treatments -Emergency HIV drugs(PEP)

PEP hivIf you think you've been exposed to the virus, post-exposure prophylaxis (PEP) medication may stop you becoming infected. PEP must be started within 72 hours of coming into contact with the virus for it to be effective. It's recommended following higher risk exposure, particularly where the sexual partner is unknown or was known to be positive. PEP involves taking HIV treatment every day for one month. It may cause some side effects.Getting PEP Treatment Sooner!

How PEP works against HIV?

It takes a few days for HIV to become established in the body following exposure. PEP drugs given at this time may help the body’s immune system to stop the virus from replicating (multiplying) in the infected cells of the body. The cells originally infected would then die naturally within a short period of time without producing more copies of HIV.

Effectivess of PEP

Research indicates that taking PEP makes infection with HIV a lot less likely. But PEP doesn’t work every time – some people who take it still end up with HIV afterwards. It can fail because:
  • the person doesn’t or isn’t able to take PEP as prescribed (every day for a month)
  • some anti-HIV drugs don’t work against some strains of HIV (although this is rare)
  • the initial viral load (the amount of HIV) in the body was too great for the drugs to be effective
However, the sooner PEP treatment is begun after exposure to the virus, the more likely it is to work.

The most reason for needing PEP

  • Sex without a condom with a person who has, or might have, HIV
  • Condom breaking or slipping off during sex
  • Sharing needles or syringes with a person who has, or might have, HIV

Side Effect of PEP

you are taking PEP you could experience some unpleasant side-effects
  • feeling sick,
  • being sick,
  • diarrhoea,
  • tiredness,
  • generally feeling unwell.
But the side effect of PEP drugs will disappear once you stop or finish the treatment.


HK$ 14,090 
Consultation and Drugs are included.
No surcharge will be included.

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Contact us

Doctor Consultation, Testing, Vaccination & Health Screening

Unit 1106, 11/F, World-Wide House,
19 Des Voeux Road
Central, Hong Kong
Central station Exit B


29/F Li Dong Building
9 Li Yuen Street East
Central, Hong Kong
Central/ Hong Kong station Exit C

Opening Hours (Consultation, Testing and Vaccination)

Mon to Fri 9:00am-6:00pm  
Sat 9:00am-1:00pm
Sun and Public Holiday Closed



Mon to Fri 9:00am-6:00pm 
Sat 9:00am-1:00pm 
Sun and Public Holiday Closed