2:7 dosing is sometimes needed by cis women and trans and non-binary people having receptive vaginal/frontal sex.
2 PrEP pills 2 to 24 hours before sex.
1 PrEP pill every day for seven days.
Total = 9 pills.
If you are a cisgender woman, or are transgender or non-binary, having receptive vaginal or frontal sex might need daily PrEP to continue for seven days.
This is for situations when you didn't take at least four doses of PrEP the previous week.
Start with a double dose before sex and then take daily PrEP for seven days after sex, at roughly the same time each day.