Pre-exposure prophylaxis (PrEP) to reduce the risk of sexually acquired HIV-1 in HIV-negative adults at elevated risk.
- One tablet once a day, preferably with food.
- Only start after a confirmed negative HIV test — and repeat the test every 3 months while on PrEP.
- Protection depends on taking it every day; missed doses lower it substantially.
- Keep using condoms — PrEP does not protect against other STIs or pregnancy.
Rare, but each has a clear action.
- Kidney problems — changes in how much you urinate, swelling of ankles or feet, unusual fatigue. Kidney function is monitored with blood tests for exactly this reason.
- Lactic acidosis (very rare) — deep rapid breathing, unusual muscle pain, severe exhaustion; needs urgent care.
- Signs of a new HIV infection — fever, sore throat, swollen glands after a possible exposure — get tested immediately; continuing PrEP with an undetected infection breeds resistance.
- If you carry hepatitis B: stopping this medicine can trigger a severe flare of the hepatitis — never stop without medical advice.
WHEN TO CALL THE DOCTOR
Call us through the in-app chat if you notice…
- A possible HIV exposure while you had missed doses.
- Fever, sore throat or swollen glands.
- Changes in urination, or swelling in your legs or ankles.
- You want to stop PrEP — especially if you have hepatitis B; stopping needs a plan, not just an empty box.
OFFICIAL SOURCE
This summary is condensed from the regulator's full product leaflet for ease of reading. The complete document — every interaction, dose adjustment and reporting note — is one click away.
This page summarises information from the regulator-approved leaflet for reference only. It is not medical advice and does not replace the assessment of an EU-licensed doctor. Your doctor will review your individual history, dose and interactions during your consultation.
← Back to consultationYou can print this page for your records.