Doxy PEP is taken 72 hours after sex to prevent some STIs.

Transcript:

Let me tell you, doxy PEP is a pill you take after sex, within 24 to 72 hours, preferably 24, latest is 72, to prevent yourself from getting syphilis, gonorrhea, chlamydia.

And it just creates just an extra boost of a barrier for you if you feel like you’ve been exposed. If you feel like something’s a little off, go see a doctor for doxy PEP.