How to stop PrEP
safely, without leaving yourself exposed.
You can stop PrEP. But how you stop matters. Here is the global standard for stopping daily, on-demand and injectable PrEP, what the protection gap afterwards means, and how to make sure you are not left exposed.
Medically reviewed by Jude Ozioko, Pharmacist (PCN 024035) • Last reviewed October 2026
PrEP isn’t a lifelong commitment. People stop for all sorts of reasons: their risk changes, a relationship shifts, they move to injectable PrEP, they take a break, or they simply no longer need it. All of these are legitimate, and stopping is completely possible with the right guidance.
The catch is that stopping the wrong way can leave you without protection exactly when you might still be at risk. This guide follows the World Health Organization’s recommendations and explains how stopping works for each type of PrEP.
How to stop each type of PrEP.
Keep going for 7 days
Take one tablet a day for 7 days after your last possible exposure, then stop.
Finish the follow-up doses
Take your two follow-up doses, 24 and 48 hours after the double dose, then stop.
Bridge the tail
If you could still be exposed, start daily oral PrEP no later than your next injection would have been due.
What happens to your protection when you stop.
PrEP works by keeping a steady level of HIV medicine in your blood and body tissues. When you stop, those levels start to fall. Protection doesn’t vanish instantly, but it does drop, and eventually reaches a level too low to protect you.
That’s why the rule for stopping is about your last possible exposure, not about the day you decide to stop. You keep taking PrEP long enough after that last exposure for the medicine to cover the window in which HIV could take hold.
Daily and on-demand tablets.
Daily PrEP (tenofovir with emtricitabine): following WHO guidance, keep taking one tablet a day for 7 days after your last possible HIV exposure, then stop. There’s no need to taper the dose. Just don’t stop on the same day as, or right after, an exposure.
On-demand (2-1-1) PrEP: stopping is built into the schedule. After your last sex, take your two follow-up doses, one 24 hours and one 48 hours after the double dose, and then stop.
CAB-LA and lenacapavir need a plan.
Long-acting injections work differently. After your final dose, the medicine stays in your body and its level falls slowly over many months. With CAB-LA this tail lasts a year or more, and with lenacapavir it can last even longer.
During the tail, the level may be too low to block HIV reliably but still high enough to affect how an infection develops. If HIV is caught during this time, it can be harder to detect on standard tests, and there’s a risk of drug resistance.
That’s why the global standard is: if you could still be exposed to HIV after stopping, start daily oral PrEP no later than when your next injection would have been due, and keep taking it for as long as you remain at risk during the tail. That means within 2 months of your last CAB-LA injection, or within 6 months of your last lenacapavir injection.
What to watch for.
- Use another prevention method if you’re still at any risk. Condoms, your partner’s treatment status, and testing all matter more once PrEP protection has gone.
- Get tested when you stop, and again at 3 months if you had any possible exposures in the period before stopping.
- Any possible exposure after stopping is a PEP situation. The 72-hour window applies, so contact us straight away.
- Restarting is straightforward. We’ll arrange a new HIV test and, for daily PrEP, a kidney check before your first new supply.
Questions about stopping PrEP.
QDo I need to taper off daily PrEP?
No. There’s no need to reduce the dose gradually. Keep taking one tablet a day for 7 days after your last possible exposure, then stop.
QWill stopping PrEP affect my kidneys or bones?
Any minor kidney or bone density changes linked to long-term oral PrEP are generally reversible once you stop. Kidney function usually returns to baseline within a few weeks, and bone density recovers over a longer period. If you had kidney concerns before, a kidney test when you stop is a sensible precaution.
QI want a break from PrEP for a few months. Is that a good idea?
A break makes sense if you’ll genuinely have no HIV exposure risk during it, for example if you’re not sexually active, or you’re with a partner who has tested negative or is living with HIV and undetectable.
If there’s any ongoing risk, stopping leaves you exposed. Plan how you’d handle an unexpected exposure (PEP within 72 hours), and remember that resuming PrEP needs a new HIV test first. If you’re on an injection, a break needs the oral PrEP bridge described above.
Planning to stop PrEP?
Talk to our team first. We’ll confirm the safest stopping point, arrange a final HIV test, and make sure you have a plan for any ongoing risk.
Talk to Our Team →Stopping PrEP is fine. Stopping it without a plan is how gaps in protection happen.
One conversation with our team is all it takes to do it safely.
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