Q and A

Question

Late with the after sex on-demand PrEP dose.

Hello for all. I started 2-1-1 prep, took 2 pills 3 hours before sex. Then I took second pill after 24 hours after sex, not 24 hours after the first 2 pills – I have delayed the second pill by 3 hours. I’m still continuing taking PrEP every day because I have sex but I am just worrying is it ok to delay the second dose by 3 hours? Thank you for reply.

Answer

Hi, how are you doing?

Being 3 hours late on the second dose is not likely to cause a problem. The initial double dose will have increased the drug levels within your body more than a single dose anyway. These drugs tend to remain at the required drug level within the body for more than 24 hours.

While it is best to take the medication as routinely as you can, being late by 3 hours is unlikely to cause you any problem. As you have now continued with daily dosing, PrEP will have remained at effective level within your body.

There is no reason to be concerned after this event,

Josh.

92 comments

  1. Christina Antoniadi

    Hello Ligg and thanks for getting in touch.

    If both you and your partner are negative the PrEP was the extra protection.

    Well done for being on PrEP and for taking it as the guidelines suggest.

    I don’t see how the sex you had can be unsafe in any way.

  2. Ligg

    I took 2preps while having sex and 1after 24h and 1more after 48 does it safe if both me and my partner are tested negative ?

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