Question
I was late with my last dose of on-demand PrEP…
15 December 2022. Related: Adherence, All topics, PrEP.
I take my prep event based. I took the start up dose at 5:30pm on Monday and had sex about 8:30pm. I then took first follow up dose at 5:30pm on Tuesday. However forgot to take the final follow dose on Wednesday till 11:30pm, being about 6 hours late.
Is there anything to be worried about being 6 hours late on final follow dose
Answer
Hi, how are you doing?
Being 6 hours late is unlikely to reduce how effective PrEP is by much, if at all. The initial double dose would have initially provided a higher than normal level of drug in your body. This can allow for being late with the next doses.
Being later can reduce the effectiveness but as you still took the last dose, this is going to be much more protective than not taking it at all.
This would not be considered a situation in which to worry.
Josh.
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