Will PrEP Work If I Have An STI?

Do STD’s Block PrEP From Working?

Does the presence of a sexually-transmitted infection mean that PrEP will no longer be effective? This is shown not to be true. PrEP will work rather or not you have other infections in your body. The mechanism of PrEP is not affected if you have, say, an ongoing infection of syphilis, gonorrhoea, chlamydia, or even a chest infection or a cold. As long as you’re still able to take the medicine on a daily basis, you will be protected against HIV.